I got news for you, computers depreciate faster than cars. One can buy a good used computer with Win7 or Win8 on it for $300 or less.
BTW, the average er capita income in American is about $50,000.00 per year. That is quite a bit more than $10/hr(21,800/yr). So, the group you listed is not the average either.
Average != median. There is tremendous income inequality in America. IN statistics Warren Buffet, Bill Gates, Koch Brothers, etc would be considered outlines. I do not want this thread to become political as that is not my point. I would like to point out for ever millionaire there are many many more who do make $10/hr waiting tables, interning, stocking shelves at Walmart, etc. Infact they make up to 25% of all income earners from what I read and 50% of all new jobs created! Low wage jobs are growing.
My point is for the bottom 25% that is a sad reality and since XP users make up 15 to 20% of users in the USA according to statistics it makes perfect sense. $300 is A TON OF MONEY for these guys and means no food and no rent out on the street.
Be thankful for what you have. I used to make a lot more in the good days and as late as last year in the great recession accepted a job for $13/hr and moved back in with my parents. A gap on a resume is a career suicide and was forced to take it :-(
Recovering now slowly but when you have asshole HR who ignores skillsets and focuses on employment gaps and job titles for x amounts of time you have people's value go down really fast and unemployable comes next. Many become the new Walmart stockers.