There are three major market for used computer in the ancient city of Ibadan. At any of these market, you can get your tokunbo computer at a rock bottom price. It is even better to buy from these market than going to Lagos, taken into consideration the transport fare to Lagos, the pain you will pass through to Lagos and the difficulty of returning the gadget if there is any complaint about it.
At the time when a dollar was being sold for N490, the price of 1GB of ram, Pentium 4, Window XP Professional, 120GB of hard disc computer was N10,000. At some places you can even get it cheaper depending on how good you are able to negotiate price.