I wonder why the big delivery companies (UPS, FedEx) have not bothered with a service like this (I am aware that you can schedule delivery windows and the like, but we can assume that no current delivery company offers this exact, concierge like service). I can only come up with 2 possible points that would render offering this service not worth their time.
First, On initial glance, this appears to be a niche luxury service that skews towards a relatively young demographic. That user base may just be too small to make it worth the big delivery companies time. Also, This business model probably only works in a metro area (I can't imagine the price points needed to make this company viable Batavia Ohio being very palatable to the average consumer).
There may also be other concerns, but these are the ones that I would first worry about as an investor. Either way, it will be interesting to see how this pans out. It really is a solution to one of those problem that in retrospect, was so damn obvious.