Rather than waiting for a consumer to say they want something from store X -- go to store-x and have them whitelabel the personal delivery service right in their website.

So I go to store X, buy product Y and wunwun is the glue that gets it to me.

I don't even need to know who wunwun is... but then when I get my thing from Store X delivered to me, a little card says "Want your own personal delivery service? Call WUNWUN and we will get you what you need, whenever and wherever you need it, all starting at just $10!"