Yes this one is going around at the moment, it's a scam.
You will place the order.
Shortly after they will say something like "we had to change the shipping method, so we will give you $[small amount] refund, please open dispute and we will give you the refund"
You open the dispute, they give th partial refund, they get the rest of the money, the printer never arrives, you are S-O-L because you already used your one-and-only dispute.
If you don't open the dispute, they will get progressively more insistent that you open the dispute, putting a time limit on the refund offer etc.
There is no printer, the printer is a lie.
You can get some cheap printers on Aliexpress, I got one, but not THAT cheap, THAT cheap is not only below cost, it's basically a free printer.
http://thinkl33t.co.uk/anatomy-of-a-scam-the-tale-of-the-40-3d-printer/