U.S.-Mattress.com - Anyone know????

Has anyone had any experience with U.S.-Mattress.com???

We are in need of a new mattress .. and want it quickly .. we've found a mattress we like .. but are now having trouble finding a place that has it in stock with a low profile box spring .. so we're considering ordering from U.S.-Mattress.com .. just aren't sure of their reputation.

Anyone know anything about them?????