China CNC Zone XB-60

I'm looking at a 50W Chinese Laser cutter and wondering if anyone has experience with this model.

50W China DIY Homemade Desktop Mini 3D CO2 Laser Engraving Machine XB-460 for Acrylic, Wood, Glass

Also on Ebay:

US Stock 50W CO2 Laser Engraving Cutting Machine Laser ENGRAVER Cutter 600 400mm | eBay

Any advice is appreciated.

G.Weike, Redsail, Rayfine, Rabbit Laser ,Hans Yueming Laser,Golden Laser ,these are all good laser manufacturer from China! en.ofweek is a laser marketplace, so their are many laser cutting manufacturers, so you have many choices for buying the laser machine from the China