I want to sell my PSP 3000, i have a few questions...

OK, so i want to sell my PSP 3000 on ebay, but i'm worried that i'm not sure that the PSP buttons are doing what they are supposed to do. How do i know that the O button does what it is supposed to do? For example, what if on this PSP something is wrong so that O does what X is supposed to do?

How do i protect myself from the possibility that the buyer buys my PSP, and then says that it came broken? He could exchange my PSP for his, and say that mine was broken, when he was lying. Sorry, I've only used ebay a few times, so i'm not sure what to do.

OK, so i want to sell my PSP 3000 on ebay, but i'm worried that i'm not sure that the PSP buttons are doing what they are supposed to do. How do i know that the O button does what it is supposed to do? For example, what if on this PSP something is wrong so that O does what X is supposed to do?

How do i protect myself from the possibility that the buyer buys my PSP, and then says that it came broken? He could exchange my PSP for his, and say that mine was broken, when he was lying. Sorry, I've only used ebay a few times, so i'm not sure what to do.

hydralisk86