Cheap O2 Sensors?

[JustROLLIN]

Hey everyone! I am in need of an o2 sensor and I sure as hell don't want to pay the $130 Mitsu wants for one. So, can anyone tell me where I can buy a cheaper o2, even if it only lasts for 2 years, the savings right now is worth it. Anyone?

Joe

[Nash]

http://www.partznet.com/dsmpage3.html $75.09

[520Talon]

oxygensensors.com $49.99

I heard theres a place that sells them for $20 if you look hard enough.