Once you have signed a contract deposits don't matter anymore. With few exceptions you are on the hook to buy the car. Only thing you would be doing at that point is putting a down payment on it. Thats not a deposit.Yeah, a salesman should not be taking deposits from people without a signed deal - that just leads to hard feelings all the way around.
Bright side, the car was the wrong color and didn't have the heated wheel and owning an air suspension car out of warranty is $$$$ to fix so maybe keep looking for something that checks all the boxes - these cars are pretty plentiful so not hard to track down.
I sell cars and I don't take deposits when people offer them. I tell people they are pointless, sign a deal and the car is yours. No? then it'll be there till they or someone else buys it.
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