Hi,
This sounds like provisioning, what they do here (British Virgin Islands) for the pleasure boat community. People on their yachts or other vessels call the supermarket with their list and employees shop for them, put the cost on their charge, pack it and ship it to them or have it ready for pick up.
Question: who consolidates the products for the customers? The wholesale business is probably they limit their staff to a minimum and they may multi-task. Would the wholesaler want this under his/her roof or remote? The shopping list could be faxed or emailed to you. Already know any people who could use your service?
Another approach may be to connect with potential customers-facilties, households who collectively could save a lot of time. This is an environemtally correct business- fewer cars on the road. I may have raised more questions than provide answers. I think it is a good idea.

Allison
L5 ASSOCIATES