I've bought loads of computer stuff off Ebay and had to send back very few things things. In the case of the RIVE I bought that had a bent pin, I noted before hand that she lived in the same town and in the end she lived a few hundreds yards off my normal commute so no hassle whatsoever.
There are two things to be do when buying a motherboard from Ebay
1. Check that it comes with the CPU cover. If it doesn't come with the CPU cover there a much greater chance of it having bent pins. If it doesn't come with a CPU cover then you must...
2. Ask for a good picture of the CPU socket. Normally a good and honest Ebayer will supply you with this so you can check before purchasing.
There are two things to be do when buying a motherboard from Ebay
1. Check that it comes with the CPU cover. If it doesn't come with the CPU cover there a much greater chance of it having bent pins. If it doesn't come with a CPU cover then you must...
2. Ask for a good picture of the CPU socket. Normally a good and honest Ebayer will supply you with this so you can check before purchasing.