Geforce 4 Ti 4200 64mb (no tv In/Out) - $120 (I think)
Geforce 4 Ti 4400 128mb Tv-Out - $189 (not as cheap but well worth it)
Geforce 2 Ti4200 64mb no tv In/Out - $120 (on sale)
the only bad thing about the cheaper ones is that they don't have Tv In/Out (some have Tv Out but not Tv In cause that's the most expensive part) and they only support CRT monitors, so if you plan on getting another video card before you buy a flat panel, then go for one of them.....
they're well worth the money
however also think about you could get a Geforce2 Ti with 64mb ram, tv Out, and a 400mhz processor (as opposed to the 500mhz on the Geforce 4) for $60 to $80 as compared to the $120 for the Geforce 4.
The 4 is gonna run better, but overall unless you're going big (Ti 4600 128mb Tv In/Out Flat Panel video card) it might not be worth it to ya to get a 4. Also depends upon how graphic intensive you like your games. My completelly untweaked Geforce2 Ti does 78fps in CS and I got a Geforce2 MX to 100fps.....
so think about it all...
ALSO, do some research on the company that makes it cause they're all "made" by nVidia but in reality other companies build them and some of those companies make them worse and their cards run worse...
I've probably said too much...