what are you intending to cut engrave with 10 watt, these lasers are no good for anything translucent like acrylic black acrylic will engrave, my 2.8w easily cuts paper, card, leather, 10mm rubber matting(3 passes) and engraves on wood leather etc for £70 shipped plug and play add power supply and 0-5v driving current, even a 10w is very limited and a lot of the 10w are 3-4 smaller diodes converged. For the type of money you have on the 10w listing look at a Co2 Tweakie has a great thread on the Artsoft forum with lots of great information https://www.machsupport.com/forum/in...c,12444.0.html with a Co2 you would have options to cut Ply MDF Acrylic and a useable laser