Hi all, please could you recommend any good seller of K40?

Hi all,
please could you recommend any good seller of K40? From ebay or aliexpress? Thanks

This is the machine that I bought and I have not had any problem with the seller. I was fused the power supply and I was sent another very fast and at no cost.
http://www.ebay.es/itm/40W-CO2-USB-grabado-láser-máquina-de-corte-para-trabajar-la-madera-Artesanía/182178830081?ssPageName=STRK:MEBIDX:IT&_trksid=p2055119.m1438.l2649

I can say that mosttool in ebay do not answear to my messages, so I will not buy there again!

But In Aliexpress there are som DIY kit that was postet here weeks ago. I would not buy a stock device again. I would buy a kit, take a smoothy board or similar and take a look to the controll software that I want to use first, like cnc/laserweb.