Which is about $1000/capita. Especially after the basic costs of food, housing and education there isn't going to be much left for expensive computers.
The purchasing power parity figures are interesting for some goods, but not others, computers aren't one of them and cost about the same anywhere. For example in Vietnam a 500ml bottle of water costs about 3000 vietnamese dong (or 18¢), in Sainsbury's the cheapest bottle of water is 39p (or 78¢) which is 4 times more expensive, but that isn't the same with technology products which at least online are often cheaper in the UK.