This is not where I purchased my bike, but this is where I take it for frequent repairs and flats. Once, I was taking it in for a flat, when one of the guys mentioned that there was this new thing called "SLIME!" that would prevent flats. What it did was it sat inside the tire, and whenever Something went wronh, like a burr got caught, it would prevent the tire from flattening because the air was guarded by the "SLIME!". It didn't cost much, and this is a really good bike store. They helped me out a lot!