I could rehash a bunch of warnings to people selling items on EBay with regards scams originating from Nigeria, but it's actually easier to just point you in this direction if you're at all concerned - eight solid pages of every kind of Nigerian EBay scam you could ever possibly imagine stretching back two years. From faked "payment received" emails to claims of "being out of the country, but the item is for my relative in Nigeria and we'll pay extra for shipping", it's all in there.

The current fees for sellers are bad enough without having to worry about this sort of thing too....