When someone asks to cancel a sale because he apparently found a better deal after winning my item. There doesn't seem to be a way to give them negative feedback. Should I just let it go even though it may have cost me a sale to another bidder?
Buyers cannot be given negative feedback. Leaving a negative comment with a positive rating is a policy violation subject to removal and sanction for the seller.
After four days you can cancel the transaction for nonpayment to give the buyer a strike and prevent feedback from being left. If you cancel earlier or for other reasons, the buyer will not get a strike.
Add the user to your Blocked Buyer List to prevent that particular user from bidding on or buying any more of your listings, regardless of what other sellers do.
