I can't find any good mouse under $80.00 but if you do get money, I would check out Razer mouses. I've gotten Naga 2012 and 2014, although I'm selling the 2012. It was $80.00 new for both. They do have a lot of buttons though, 17 for Naga 2012 and 19 for 2014. I use the tilting scroll wheel for web pages I develop for and needed macroes that the Razer software could do(2014 is the one that has it). I needed about 9 macroes to do pre-set actions. I'm not sure if you can find a gaming mouse for under $30.00, macroes are just to useful and most mouse at price have few buttons.
Also, the M510 mouse I have is a no-go for gamers. I have one that came with my mk550 wave and it is impossibly slow, not to mention the setpoint for it has no real options. The mouse may last for 5 to 12 months at battery time, but its really slow DPI cripples it, and it's sad to, because it has leather on it. That said, it's a no-no for gaming, curser moves to slow.
Edited by hinatai - 3/20/14 at 6:12am