: Can this item be purchased at a Home supply company, (Lowes) and for home use what model is best at the lowest price.

Some of the pressure assist toilets are at the home centers. I have seen the Eljer with the PF/2, the Mansfield Quantam, American Standard and the Kohler.
I have sold a lot of the Gerber Ultraflush to people that want the Flushmate, it's only sold by plumbers though.
All of the Flushmate toilets work well.