Vortex Sparc and Primary Arms are good quality budget optics.
Holosun also make decent budget sights.
I have used a Sitemark on an 870 shotgun so it'll probably survive on a .22. I only borrowed that shotgun so don't know for sure about its longevity but it survived a weekend shotgun course.
Personally I've used a couple of NCStar optics on my 15-22, both a zero mag red dot holo projection style sight and a fixed 4x scope. I handily won a bunch of competitions with them. NC Star are budget budget but they are decent for a plastic frame .22.