This happened to me once when I sold a dkny bag and purse for £79, I see that buyer had paid on eBay so got the address and posted it, then I see the money was held I
Had a heart attack and thought I was going to be robbed of a fair bit of money. But they finally cleared it and all was good, was apparently completely random
as I wasn't a new seller and had 100% positive feedback!
Such a pain in the ass!