I noticed today that my passenger side fog light lens is cracked badly. Must have caught a rock or something...

I assume the fog light assembly is a sealed assembly & I will have to replace the entire unit.

If so, does anyone have a working passenger side fog light, or a pair [driver & passenger] they want to sell, maybe leftover from a fog light upgrade. How much???

If I can replace the lens itself, anyone know $$$ ???

Your assumption is correct, you have to replace the entire light.
Try posting in the Wanted forum, you'll probably get more results there.

Just get the Hella 500's. They are cheap, have better light refraction, and have the replaceable H3 bulb that is stock wattage (55w). Brian