Is there a good gaming desktop i can afford?

you posted this in the graphics cards section. are you only looking for a $2-300 gpu for gaming? or a complete system?

a complete system for $300 is not going to be that "good" as it's really scraping the bottom of the barrel. you may be able to scour for used parts and put something decent together, but all new parts for $300 is not going to get you much at all. especially if you need windows and the monitor and so on