you can get a simmons, luepold or Bushnell for about $40. There not that great but i think it would work well on a 22 lr. I don't think you would need anything more than a 3x9 on a 22.

I am partial to CCI 22 ammo. It has always worked well for me in every gun even my pistols. Seems very consistant. It's pretty cheap too.