A window addendum circulating online under the name of George Nunnally Chevrolet in Bentonville, Arkansas, prices a 2027 Corvette ZR1X at $400,000 over MSRP, for a total of $696,445, and leaves the documentation fee out of the price altogether. The dealer’s own website says otherwise. Every new vehicle I checked there on Oct. 19 was priced the same way: the manufacturer’s suggested retail price, plus a $129 documentation fee, minus any factory incentives. Its most expensive new car that day, a 2027 Corvette Grand Sport 3LT, carried an MSRP of $122,695 and a dealer price of $122,824.
I could not confirm that the dealership issued the sheet, and it has not commented publicly. What I could check is the addendum against the dealer’s own published pricing, Arkansas’s dealer advertising rules, Chevrolet’s records and NHTSA’s VIN database. The sheet matches some of them and conflicts with others.
What the ZR1X addendum says
The sheet carries the dealership’s name and its address, 2700 SE Moberly Lane, with the words “Corvette Performance Center” underneath. It describes a 2027 ZR1X 3LZ convertible in Red Mist Metallic over a Jet Black interior and lists an MSRP of $296,445.00. Under that sits a $400,000.00 “Exclusive Market Value Adjustment,” described as a “Tier-1 Production Allocation” and “Hypercar Demand Premium,” for a “Total Adjusted Selling Price” of $696,445.00. The adjustment alone is 135% of the MSRP. The sheet brands the car a “Flagship Hypercar Edition,” calls itself a “Special Allocation ZR1X Addendum,” and closes with a disclosure that the price excludes taxes, title, registration, “dealer documentation fees, and optional protective accessories.”
Some of it holds up. Red Mist Metallic Tintcoat is a real color in Chevrolet’s 2027 ZR1X configurator, and $296,445 is plausible for a well-optioned 3LZ convertible: by my math from Chevrolet’s configurator, it works out to roughly $45,000 in options above the convertible’s starting price plus destination. The edition name does not. Neither the ZR1X model page nor Chevrolet’s build tool lists a “Flagship Hypercar Edition.”
How George Nunnally Chevrolet prices cars on its own website
The dealership’s new-vehicle inventory listed 115 vehicles on Oct. 19. Each listing I reviewed, including the dozen highest-priced vehicles on the lot, shows the same three-line breakdown: MSRP, a $129 documentation fee, and a bottom line the dealer calls the “Nunnally Family Price.” Where Chevrolet is offering incentives, the listing subtracts them; a 2026 Trax LT with a $26,325 MSRP, for example, was priced at $25,954 after $500 in bonus cash and the fee. Several Tahoes, Suburbans and Silverado HDs were listed thousands of dollars below MSRP. None of the listings I reviewed showed a market adjustment, an addendum charge, or a price more than $129 over sticker.
The Grand Sport at the top of that list carries stock number C7008. No ZR1X, ZR1 or Z06 appeared in the dealership’s new inventory, and a search of the dealer’s site for the addendum’s VIN returned nothing. That could mean the ZR1X has sold, is being kept off the website, or was never there.
The dealership’s published material does not match the addendum’s branding. Its website and its Facebook page, which goes by “Nunnally Chevrolet,” make no mention of a “Corvette Performance Center.” The site’s About Us page describes a family-owned business founded four decades ago by George and Gan Nunnally, with no Corvette specialty. Its Corvette buying guide, posted July 29, says allocation is limited and that many buyers order the exact car they want, and it lists the 2026 ZR1X from $207,100 before destination. It says nothing about market adjustments. Its 2027 ZR1X page quotes Chevrolet’s $227,800 starting MSRP and adds that the dealer sets the final price. The most recent posts I could view on the dealership’s Facebook page on Oct. 19 did not mention the addendum.
Arkansas counts a window sticker as an advertisement
The $129 fee on every Nunnally listing is the ceiling under Arkansas law. Arkansas Code § 23-112-317, as published in the 2020 code, allows a dealer service and handling fee of no more than $129, and the Arkansas Motor Vehicle Commission’s Rule 8 repeats the cap. With limited exceptions, the statute requires the fee to be charged to all retail customers, itemized on the buyer’s order, and paired with a printed notice that it is not an official fee.
The commission’s Rule 3 on advertising is where the addendum runs into trouble, if it is genuine. The rule defines an advertisement to include a “price tag, window sticker,” and any other medium used in soliciting business. It requires that an advertised price be the full cash price the dealer will accept, and it lists dealer service and handling fees among the charges that “must be included in the advertised price.” The circulating addendum excludes them. The dealer’s website includes them. The rule also says that dealership addendums are not part of MSRP, defines an addendum as a list of equipment or services the dealer adds to the car, and requires that terms “unfamiliar to a consumer must be fully defined.” The ZR1X sheet’s $400,000 line covers no equipment, and it does not define “Tier-1 Production Allocation.”
Whether the commission would treat this sheet as a violation is for the commission to decide, and it would first have to establish who made it. I found no mention of the dealership in the commission’s business-meeting minutes from Feb. 27, April 16 and Aug. 20, 2025, or Jan. 21, 2026. Those are the only minutes I reviewed, and I did not search state court dockets.
What a clean VIN decode proves
The addendum labels its VIN line “Official Factory VIN Verification.” I ran 1G1YR3D71V5900264 through the National Highway Traffic Safety Administration’s VIN decoder, and it came back as a 2027 Chevrolet Corvette ZR1X 3LZ built in Bowling Green, Kentucky, with the message “VIN decoded clean.”
That result has limits. Under NHTSA’s VIN rule, the ninth character of every VIN is a check digit. Each of the other 16 characters is converted to a number, multiplied by a weight assigned to its position, and summed; the remainder after dividing by 11 becomes the ninth character, with an X standing in for 10. A clean decode means the 17 characters are well formed and fit the pattern GM registered for a 2027 ZR1X 3LZ. It does not mean the car exists, sits on that lot, or was allocated to that dealer. Only GM or the dealer can confirm those things. I found no other public listing or record carrying that VIN.
Federal law protects the factory label and leaves the price alone
The factory window sticker exists because of the Automobile Information Disclosure Act of 1958, usually called the Monroney Act. Section 1232 of Title 15 requires the label to show the suggested retail price, the price of each factory option, the transportation charge, and the total. Section 1233 makes it a crime to willfully remove, alter, or render the label illegible before the car reaches the buyer, with fines of up to $1,000 and up to a year in prison. Nothing in the law limits what a dealer can charge, which is why markups ride on a separate dealer sheet. Chevrolet’s own fine print under the ZR1X price says, “Dealer sets the final price.”
The federal rule that would have policed dealer pricing language is gone. The Federal Trade Commission’s Combating Auto Retail Scams Rule, published Jan. 4, 2024, required accurate pricing disclosures in dealer advertising and sales communications. The U.S. Court of Appeals for the Fifth Circuit vacated it on Jan. 27, 2025, finding the FTC had skipped a required advance notice of proposed rulemaking, and the FTC formally withdrew it effective Feb. 12, 2026. That leaves state rules like Arkansas’s Rule 3 as the closest check on how a markup is presented.
Chevrolet raised the ZR1X price before any dealer did
When Chevrolet announced ZR1X pricing on Aug. 6, 2025, the 2026 1LZ coupe started at $207,395 and the 3LZ convertible at $228,395, both including a $1,995 destination charge. By the time GM published the car’s 8.675-second quarter-mile run on Jan. 13, 2026, the starting price had moved to $209,700 with destination. For 2027, Chevrolet lists the 1LZ at $227,800 and the 3LZ at $238,800, before a destination charge that is now $2,495. With destination, the entry-level ZR1X coupe has gone from $207,395 to $230,295 in about 14 months, an increase of $22,900, or 11%. GM’s third-quarter sales report said Corvette sales rose 29%.
When GM raises MSRP, GM collects more on every car it builds. A dealer’s market adjustment goes to the dealer alone. My read of the 2027 increase is that GM is taking back some of the margin that, in a hot market, would otherwise land on an addendum or in a flipper’s pocket.
The markup comes with a tax bill and no protection
Arkansas collects sales tax on the total gross receipts of a vehicle sale, and the state rate is 6.5%. On a $400,000 adjustment, that is $26,000 in state sales tax, before any local tax set by where the buyer registers the car. On the full $696,445, the state’s share is about $45,269.
The adjustment buys no hardware and no extra warranty coverage. Unless the buyer arranges agreed-value coverage, a standard auto policy settles a total loss at the car’s actual cash value, meaning what the market says it is worth that day, regardless of the purchase price. A buyer at $696,445 is betting that the market for this car stays at least that high for as long as they own it, while Chevrolet keeps adding to the top of the Corvette lineup. The Auto Wire has reported on ZR1 production volume, the Grand Sport X hybrid, and a ZR1X consigned to auction in Monterey.
What ZR1X shoppers should check before signing
Start with the Monroney label. Match its VIN to the addendum, and confirm that the options and destination charge on the factory label add up to the MSRP the dealer is quoting. In Arkansas, the dealer’s advertised price on a window sticker is supposed to include its service and handling fee, so a sheet that excludes it deserves a question. Ask for any market adjustment as its own line on the buyer’s order. Treat edition names, allocation language and words like “official” on dealer paperwork as marketing until Chevrolet’s own materials confirm them. If you are financing any part of the purchase, check current loan rates before the finance office runs the numbers.
The next things to watch are whether George Nunnally Chevrolet confirms or disowns the sheet, whether this VIN turns up in its inventory or a sale record, and whether the Arkansas Motor Vehicle Commission takes an interest. A dealer whose website prices everything from a Trax to a Corvette Grand Sport at no more than MSRP plus its $129 fee would be making a $400,000 exception for one car.
Would you pay any market adjustment to get a ZR1X now, or is MSRP the most a new car should ever cost?
Top photo: General Motors.