Looking for a Canon EF 50mm f/1.4 USM lens

[Big]

Hey guys, I am looking for a Canon EF 50mm f/1.4 USM lens. If anyone has one that they would like to sell for a decent price that would be great. My Canon 100mm 2.8 isn't enough in the low light for me and I'm looking for a lens that's used and in nice shape. I can't seem to find a good deal on them online so if anyone can help me out that would be awesome! Thanks!
-BIG