Amazon Prime is pretty genius.  You pay $79 and you get free 2-day shipping for a year (you can also share it with 3 people so it could be as cheap as $20/yr).  Why would I shop at buy.com or walmart.com if I have Amazon Prime.

Get Caribou at Work is pretty genius too.  They bring your product to your work place.  No extra work needed.

What can my business (Flying Cart) do to make things easier for the customer?