I've heard from a very reputable source that all of the large factories that were producing in China and India have been or are being shut down, and that the enormous stockpiles are finally starting to dry up. Mephedrone went on for a long time considering it's been banned for years, but I'm afraid it's the beginning of the end. Watch prices soar for the real stuff and a huge influx of shitty RCs being passed off as Mephedrone. I'm afraid to say that whilst I'm sure small batches are going to show up now and then from private personal labs, 4-MMC is on the decline, and will have disappeared altogether soon. Don't shoot the messenger.