U can have entry level laser mice starting from 450 from brands like Tech-Com or Intex.
If u have some 850 bucks, then u can get an iball 5 button 1600 cpi laser mouse, which i too have got. Its really nice. Ive used 3k+ muuses like G5 and MX 518. The only downside of this iball one is it has no onthefly res changer. Comfortwise its as gud as G5.
Orelse u can try changing mouse pads. The below pic is of 40 bucks fine cloth pads with rubber cushions as base. They are really nice. I have used expensive mouse pads [ from razer on my friends place]. Camparing this with that, its not that bad. Good for an avg-pro gamer, but not for enthusiastic.
*img128.imageshack.us/img128/9951/dsc03920mt1.th.jpg