Good news for Steam users, it’s now possible to refund nearly any purchase you made on Steam. You don’t even have to explain why you want a refund, the reason doesn’t matter.
Valve will issue your refund in any case as long as you didn’t play or use the product for more than two hours and as long as the request is made within fourteen days of the purchase.
Find out more on the Steam blog entry and learn how Steam refunds work.