Im in Santa Clarita too, you can do the shit yourself, easy, mine was Rustoleum brand epoxy from the Home Depot, cost me $99 bucks for a 2 1/2 car garage kit, the kit comes with everything needed.
you can see the floor in these pics
Clean the floor
acid wash it with the supplied acid in the package (or if you have lots of old oil stains, pick up some ZEP brand name concrete floor cleaner, that shit takes everything off, get a brush too)
once the floor is nice and clean, and free of oil and other stains, (needs to be completely DRY), you hit the corners and small crevices with a brush, and just roll the middle with a paint roller, step back and throw on the flakes (if you want the flakes),
the kit comes with a DVD that pretty much shows how to do it, the only hard part about the whole ordeal is not being able to park in the garage for 5 days or so.
Mine has been on for going on 4 years now, and if i clean it up, looks just as good as day one, nothing sticks or stains it, im really glad i did it.