Building a garage, cost $$$$

I do not know much about building materials or garages but this looks pretty
simple to assemble. I hate to buy a garage and "get what you pay for" so does
anyone have any experience with these? I am on a low budget and it looks like a
28x28x10 garage is about 7K. Is this a good quality product? Snowload for
NY?....Thanks in advance! see link: http://www.valuesteel.com/metal_garage.htm