The high bidder doesn't always win

Talked to the high bidder and ask if they were interested in buying the vending machine that i own how much same thing they bid , wasn't interested. If you change your mind the price goes up daily by $1,000. Bestbuy just called back they want it and can get it next week okay but there is a $200. A day fee for storage. I'll accept a local certified check.they'll get it today machine only no merchandise .