The Better Business Bureau of the Midwest Plains (BBB) is warning consumers nationwide about a fraudulent online vehicle marketplace operating as “Infinity Auctions” at auctionsinfinity.com. A BBB investigation determined the website is an imposter operation that lists a Rapid City, South Dakota, address it does not occupy and advertises vehicles using photos copied from legitimate sales conducted on other websites. Consumers should also be aware that Infinity Auctions is also a legitimate, South Dakota-incorporated business that operates in Rapid City under the same name and is not connected to the fraudulent website.
BBB has reported the fraud to the South Dakota Attorney General’s Office and contacted the Rapid City Police Department. Affected consumers have been advised to contact the Rapid City Police Department directly to file reports.
The Investigation
The scam website claims a physical address of 6995 Reservoir Road, Rapid City, SD 57703, and presents itself as a verified, licensed dealer offering live auctions and instant “Buy Now” purchases on cars, trucks, tractors, RVs, and heavy equipment. BBB confirmed the business does not actually operate from that address, and its true location is unknown. BBB contacted the owner of the building at 6995 Reservoir Road, who confirmed he does not sell vehicles and that no other business operates out of the property. BBB also attempted to reach the business by phone but was unsuccessful.
Using reverse image searches on several vehicle photos shown on the site, BBB located prior listings for each vehicle reviewed, confirming the same vehicles had already been sold through other legitimate websites. In one reported case, a vehicle offered on the site had actually sold at auction two years earlier.
The legitimate Infinity Auctions, a South Dakota–incorporated estate-sale auctioneer that conducts online sales through HiBid, told BBB it has filed a complaint with the Federal Trade Commission and communicated with the Pennington County Sheriff’s Office. A representative said they reached an individual associated with the suspected imposter business, but the conversation produced no useful information.
How the Scam Works
The fraudulent site lures buyers with verified-looking vehicle listings priced to move and a sense of urgency created by “live” auction countdowns and instant “Buy Now” offers. After a consumer submits a winning bid, the operation sends an incomplete sales agreement and pressures the buyer to wire payment before the deal can be properly verified, often adding a separate fee for delivery. In one case reported to BBB, the agreement was missing the company’s full name, address, and an authorized signature; when the consumer contacted the business for clarification, they alleged the representative refused to provide additional business details, became defensive, and ended the call. In another, a consumer in Texas wired payment for equipment and was charged an additional delivery fee, then given a tracking number that showed the item as delivered, but the equipment never arrived.
Three BBB Scam Tracker reports have been submitted regarding the operation. One consumer reported no financial loss, while two others reported losses of $23,400 and $24,570, nearly $48,000 combined.
Red Flags
The website uses several tactics designed to build false trust and rush buyers into paying:
• A false business address that does not match the company’s actual location.
• Vehicle photos copied from listings already sold on other legitimate sites.
• Trust signals that cannot be verified, such as a “4.9/5” rating, “3K+ happy buyers,” bank logos, and claims of identity verification, buyer protection, and 256-bit encryption.
• An incomplete sales agreement missing the company’s full legal name, address, and an authorized signature.
• Pressure to act fast through countdown timers and instant “Buy Now” offers.
Tips for Consumers
• Verify the seller’s physical address independently before sending money; do not rely on the address shown on a website.
• Be wary of listings priced below market value and of pressure to act quickly.
• Run a reverse image search on vehicle photos; reused images often signal a fraudulent listing.
• Insist on a complete sales agreement with the company’s full legal name, address, and an authorized signature before paying.
• Check a business and report suspicious activity at BBB.org and bbb.org/scamtracker.
If You Have Been Victimized
• File a report with BBB Scam Tracker at bbb.org/scamtracker to help warn others.
• Contact the Rapid City Police Department directly to file a report.
• Report the fraud to the South Dakota Attorney General’s Office and the Federal Trade Commission at reportfraud.ftc.gov.
• If you sent payment, contact your bank, credit card company, or payment provider immediately to ask about stopping or reversing the transaction.
To report a scam to the Better Business Bureau, go to their Scam Tracker website.
About BBB Midwest Plains
Better Business Bureau of the Midwest Plains is a 501(c)(6) not-for-profit organization, dedicated to serving over 300 counties across Iowa, Kansas, Missouri, Nebraska and South Dakota. Headquartered in Omaha, it also has offices in Kansas City, MO, and Sioux Falls, SD. BBB sets and upholds high standards for fair and honest business behavior. Its consumer services are offered at no cost, providing objective advice through a comprehensive directory of over 5.3 million companies and 11,000 charity reviews. BBB offers dispute resolution services, alerts and educational information on topics affecting marketplace trust. Visit BBBinc.org for more information.
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