Side note: "Price fixing" is generally not allowed, but as previously mentioned you can control who you do business with. The company I work for has a "unilateral pricing policy" and anyone not willing to work within those confines, or who breaks this policy, doesn't get to sell our product. Completely legal. And there are ton of ways around it - "unrelated" total order discounts, or store credit for other products or freebies. whatever.
Side note: I'm not running the SuperDMZ RX yet, although I think I will pull the trigger on it in the next couple of months.
I am running the Osta RX, mainly because I have run mk2866 in the past - from what I believe was a reputable source - and saw significant effects in hardening and muscle sparing during a serious cut. I also had no significant sides during cycle, but had some serious shutdown, even with a two week taper. Clomid kicked everything back into gear, but I was hoping all the "No pct needed" hype was right....but my test levels were in the crapper for awhile. Good news was that I kept most of my muscle, and didn't see any jump in bf% afterward.
I'm only 12 days in on the Osta RX with nothing much to report right now. *shrug* I'm giving it a fair shot though, but definitely getting bloods done after this one too.
*edit* and I got it before the price hike, def. wouldn't have given it a shot @ 99$ when you I can get the other stuff for 49$ more