I'm on the same boat as you here, my mouse cost £2.99. Dpi is a personal choice though.
HK_ wrote:Its seriously only personal preference. I use mouse so cheap that i cant even set dpi and thus i dont even know what dpi am i using and i can still play decently.
If you dont mind moving your hand over the whole table set 0dpi and if you are to lazy to move at all set billion dpi.