Our last hit buy post focused on the cost of delivery. The price seems to be good until the delivery screen. Delivery and logistics are the second hardest part of really any business. Outsourcing what should be a core compentency to a third party and shipping over long distances can be very risky.
But certainly not the riskiest.
You have checked the social blogs, the BBB, CitySearch, Angies' List, Yelp, Bizrate and others. You are comfortable with the store ratings, delivery policies and customer service.
One last consideration: Who will service it when there is an issue? Its worth a call for that specific bit of information