flea markets, refurbs, some walmarts. Craigslist, newegg.com ect...
Chances are the maybe, but it would most likely be second-hand.
Yes. There are a few mini laptops under $200. If you are looking for a better quality laptop with more features for under $200 consider buying on used on EBay or Craigslist.
You can find a stand just like this at Wal-Mart, Target, or most furniture stores. They tend to be on the cheap side so finding one under $200 should not be a problem.
http://www.newegg.com/ is a site you can find hubs for under $200, however this site (FreshDeals.com) has the widest selection.
You can find cheap pocket bikes for less than 200$ online at sites such as minipocketbikes.com and other trusted sites. You might be able to get a good cheap one craigslist or ebay.
Look for a laptop under $200 at e-bay, local newspaper, computer stores, second hand shops, recycled PC places or craig's list. Also, look at Microcenter (online or in store).
how use internet in laptop via nokia asha 200
You aren't going to find a "cheap" one unless $200 is cheap to you. Anyways go to Cobra Airsoft and the should have one for around that price
You aint gone find em cheap, if you do find them $200+ , try ebay, or shoe websites. ;) do your research.
The best netbooks for under $200 are the ASUS Eee PC models. These netbooks are sold very cheap with and have excellent specifications. The Atom processor in these books is very efficient.
As your son is only five it might be worth considering a second-hand, refurbished laptop. Alternatively, go for a netbook. The small keyboard will be perfect for your son's hands and there are lots available, new, for under 200. Check out review sites or this guide by MoneySaving Expert - http://www.moneysavingexpert.com/deals/cheap-netbook-deals
You can find some at Amazon, Best Buy and Walmart that are on sale or they will cost you under 200 dollars and some that can cost you a little over 100 dollars.