It's not guaranteed though. I paid £13 for Blue Facebooks which could have been anything from high MD, medium MD or dud. Luckily they seem to be high MD but even that isn't guaranteed, some people are thinking they may be MD & something else, mephedrone for example. If your pill came with a 100% guarantee that it had 120mg of MDMA in it then aye fair enough, but that is never going to happen. What if you get some pills that are banging, definitely real, so you then decide to invest in 100 to get them a bit cheaper & have a stash for a while but the 100 you buy turn out to be from a different batch with only a small amount of MDMA in them? It was different when they were £1 or £2, there was still a chance they could be shite (a much smaller chance right enough) but it was a risk worth taking.