and had no luck. I was told that you could use one from an older Nissan Sentra, but they're not maintenance free like the Nissan OEM ones. I never actually tried them myself, this is just what I was told by another member here. New lower arms with the ball joints pressed in are $105 for NA or $175 for TT's. It sucks that there isn't an option for an easy replacement, but they really wouldn't be that easy to replace anyway as they are press fit and require a special ball joint press to get them out/in again anyway.
If you do find an easy/cheap answer please let me know.