Well, maybe or maybe not..
The University he is talking about is likely to be the mini-campus in Isale-Igbein right in the centre of Abeokuta, the Capital of Ogun State.
There is really two points I noticed, first is the phone number starting 1 (702) yet the area code in that area is (234) and as far as I am aware Nigeria does not use Zip Codes.
Just let him pay by Paypal, if you get your money, then fine, provided he does not complain to Paypal that he did not get his goods.