I recently made an order for 1gram High Purity MDMA from allchem@agora, for ~$40. I also made another order from a 'fairtrade' @evolution, for free .2 mdma rocks.
The fairtrade stuff came as 2 rocks, looked like crack, allchem's looked like a 'wet', white 'sugar in the raw'. The fairtrade stuff was definitely stronger, about 20-30% stronger for sure.
However, that said, fuck ordering from the netherlands, as well as the month long ship time from there. Allchem is also cheap as shit, besides ~$20-30 grams from Netherlands and other sketchy places, Allchem is the cheapest vendor with domestic (it's not really domestic since it's Canada actually). You WILL get fucked up from a fingernail sized dose of this shit. The stuff weighed on point (might not look like a gram of powder, but it is because it's clearly heavier than your average powder like coke or whatever), and it tested immediately and obviously with Marquis/Mandelin/Mecke reagents.
The 2c-b, haven't tried it, but it tested positively under reagents. 2 doses of 2c-b, that's basically worth ~$40, I mean shit that's the price of the gram right there.
Despite the stronger shit being nether, I will be ordering from allchem for convenience, price, and OPSEC. I'd only order Nether if I wanted bulk for dealing and accepted the risks, or maybe some of the free small samples you see listed time to time, in which case fairtrade was great.
Also, allchem sent me a duplicate order (1g mdma high purity + 50mg 2c-b). That was odd.
allchems high purity wasent the strongest but by far the purest ive had. smoooth comedown, i slept well after. Not as speedy as i would have liked it to be, but i guess i can make my own caps.