If you are looking to buy Mol d' Art melters, I highly recommend Technobake.com. I purchased from them last year the 6 kg model and was very happy with their customer service. Recently, I made a silly mistake by putting the heat gun next to the electric cord of the melter and burned the cord. I called them and they were very responsive and helpful. Now the machine is on the way to be repaired. What a relief! Also, their pricing is excellent - the lowest I found online.
By the way, I'm a recent graduate from EC and not affiliated with the company.