Maybe it was the speed of the auctioneer’s prattle, the thrill of bids rising in $100,000 increments or the rush to snag a multimillion-dollar mansion at a discount, but the buyer with a NASCAR pedigree mistakenly thought it scooped up two beachfront estates for $6.2 million.

Haas Automation Inc. now faces a steep loss after Miami-Dade Circuit Judge Jacqueline Hogan Scola ruled the company forfeited a $1 million deposit by failing to close on the sale for twice what it thought it owed. Haas also is liable for another $486,500, including nearly $237,500 in interest, more than $224,400 in attorney fees for the sellers and auctioneer, and about $24,600 in cost courts.