Epoxy floors are great Adam. My Pandor shop for our AV business is 10,000 square feet and industrial manufacturing grade epoxy floor was installed 4 and a half years ago. More expensive than I can even recall, and likely out of your price range as you have stated above. Definitely the best solution, but too spendy for this application I would think.
By contrast, the new Décor shop with BPL does not have the budget for an epoxy floor either. I have no idea if swisstrax is a good product or not, but I am looking it up now as well for Décor / BPL shop as it is in the 2000 to 3000 square feet as well. Hope the reviews prove favourable.
Looks interesting.