In need of a gaming/office chair.

Hey guys, I'm in need of a cheap gaming/office chair. I've always wanted to buy one of thoughs DxRacer chairs but they are so expensive. This is my current chair I've been using for 2 and a half years, the left arm-rest broke off because I have a really bad back problem and need support to get up so I usually press down on them to get up. Is their anyone that has a gaming/office chair they don't use anymore/need that I can buy for $30-$35? Please help out a fellow gamer.