Grind and Seal is a great, affordable alternative to traditional polished concrete.
The Grind and Seal system is where the concrete is ground down to expose the desired level of stone and then coated with a topical urethane (such as tetrathane or liquathane) or an epoxy (such as EPO100G glaze) which may also have a urethane tetrathane top coat.
A great advantage of a Grind and Seal system is the finish is non-porous, therefore easier to keep the floor stain-free.
Grind and Seal systems typically take less time to install and in most cases will be a more cost-effective alternative to the mechanical polish system.