Dealer wants a non-refundable $1k deposit on a CPO 718 base. Should I just tell him no and play the risk?

Saw a beautiful 718 CPO. Inquired and the dealer is asking 1k non-refundable deposit to take the listing off market. Wondering if this is normal or if I should just tell him I’d rather play the risk until I come in to see the car on Friday?

Thanks