Laser Cutter

Hi all,

Granpa wants to get the grankids a 40w laser cutter for xmas. Have a decent budget. :). Looking at a k40 style then adding a cohesion3d board with lightburn and camera to go with it.

Looking for a good vendor to purchase from that can get it here before xmas.

Anyone have experience with these ?
Is there a better option complete say under $800 ?