Buyer back out of listing. Sent us a cancelation, minutes after purchasing item. Ended up costing us $7 in reversal paypal charges, for a BIG $$$ transaction. We agreed to cancel, only because we didn't want the hassle or excuses for the item being returned. Buyer was reported to eBay and blocked. If this buyer does this to you, simply follow eBay rules and never respond to buyer. Report the buyer immediately, cancel if necessary. If buyer is reported & repeat offender, then eventually this person will face limitations or suspension down the road.