It seems a bit overpriced to me, but then again I sort of look at the garage as a place to craft my own solutions with the maximum function and a minimal investment...sort of. I could just be more of a fan of gorilla shelving then the next guy? or those large chrome plated rollaway style shelving units. Rubbermaid clearview shoeboxes handle the small stuff and tuffbox folding top crates handle the large parts.
As we say this, my 10x10 shed is being plumbed with pneumatic drops and 3/8" truflate fittings all around because Im tired of having the damned air hose laying on the ground or dangling off the compressor all the time. Whatever I want is always just out of reach when I want it - and I would like to have a few tools online at once etc...so now I've managed to stuff some 40' of 1/2" pipe and about 50$ in fittings (not counting the truflate stuff

) into a 10x10 shed...don't necessarily take my advice
FWIW: Have you seen the GGW stuff in person? My local sears hardware center has a ton of it in stock and some other things...all setup as if its in a garage with workable configs. Might be worth a checking out if you got one?