Replying to Swix wax

I was thinking of getting some swix Lf10 ski wax and i wanted to know what the diferences are between waxes. The LF from what i understand means low flourocarbon and it has more hydrocarbon in it. I wanted this because i heard that swix makes the best wax and this was the step down from stuff that costed more than 90 bucks and i wasent going to speand that much on wax. I Looked at the diferences and the more expensive one had more flourocarbon in it. My big question is what is Flourocarbon and what makes it so expensive. Is it any better than a ptex wax or is it just for certain skis. +k for help