So I am going to totally backtrack on a lot of what I have said in the past. There are a lot of great coatings product out there and they are very simply a lot of work and don't adhere well in the cold.
There are a lot of crappy products out there that claim they work with 'secret sauce' etching agents and epoxy that is mostly water. I've said probably 100 times in this forum that there is no easy garage floor coatings and that the cheap ones are great for grinder rental sales
BUT
There is a company out of Nevada, that I originally learned about via Shea, that makes a high solids urethane that was originally developed for abrasion resistance on the wings of aircraft.
Since then it has become a hot product in the automotive industry, and commercial/industrial jobs have taken a liking to it for coating concrete because it does not require the prep work of traditional epoxy and holds up much better than paint.
If your looking for a high build, full broadcast system, this is not the right system. If you are looking for a great coating starting at around .83/sf (for both coats) this stuff is nothing short of incredible. AND IT CAN BE APPLIED TO A SURFACE TEMP of 35 Degrees.
http://www.garageflooringllc.com/rust-bullet-concrete/