I worked in Nigeria for years, these f*ckers could steel the holes out of a flute, they are called 419ers,419 is the number on the statute book for fraudsters, they are the biggest scammers in the world, you probably would not get the item you thought you had got, they would have had your payment, and would have been the last you would have heard of it.
I don't think that paypal deals with Nigeria, e-bay does not as it's too high a risk country, and of course paypal & e-bay are the same company.
Are you sure it is a bona-fide paypal e-mail you have received?
Have a look h