Cost of installing epoxy floor

I'm planning to install an epoxy floor coating in my garage which seems to be very dirty because of the unnecessary junks. A friend of mine has recommended me to install an epoxy floor coating ( http://www.epoxytoronto.com/products...-overlayments/ ) from a Toronto based floor contractors - Proseal Fooring. According to his experience, it’s not a big deal to maintain or clean epoxy coated floors. I will be giving them a call within two days. Prior I make the call, I want to know what will be an approx expenses of installing epoxy floors? Has anyone ever tried their services out?