Point #1-
PCS is a SERM, or at least, that's what the makers insist.
Point #2- You asked "Why not get a SERM when you can get them for less than mostly all OTC post cycle therapy products?"
How about, it's illegal, bottom line. Sure, you can get it online, and there is so much talk about using a "research" defense", but the bottom line is, for 99+% of the people using it for these reasons, they are using it illegally. Rats, cows, pythons, mice....sure are of alot of animals needing SERMS all of a sudden. Also, SERMS are being used in excess from what I'm reading and they have their own risk of serious health issues.
I agree with you though on one point, and that point is that certain substances are going to require a prescription SERM, and in that case, if you aren't willing to get the SERM, you have no business doing the substance, or at least, you will suffer the consequences if you use it and don't have a SERM. That is why I won't use those substances (M-1T, Superdorl, maybe even Pheraplex)..So, I guess I'll have to just settle for 17 1/2 arms instead of 18"...I can live with that.
Cheers.