I'm impressed. Most things are cheaper than Best Buy or Circuit City, and the selection is better than both of those put together. (Some items are overpriced, though...the Harmony 659 is $199, and that's $50 over BB price, which is already high compared to net prices - I bought one for $89.99 from Newegg last week.)
I'm especially impressed with their high resolution audio selection (SACD and DVD-Audio). I've already blown over $100 there on music alone.