I was told me it's a negative experience for them and its allowed. Makes you not want to open unpaid item disputes and just eat all the money that you will lose. Do you know why this is allowed to happen on eBay?
Golly gee... ebaY doesn't have have any problem with deadbeat NPBs leaving retaliatory feedback or DSR dinging... Do they? Only Bad Buying Experiences... and noisy fleas sellers.