our company does this as well, we charge 15% plus a stocking fee. I mostly do this for retainer clients but if someone has a "larger" list it is worth it.
I was wondering though. does DC take Visa/MC? DC does a great job at this, so use them!
Our fee is 20% of the total grocery bill. The delivery and stocking fee is $25. We offer discounts for clients that would like to utilize this service on a regular basis. Our services also include errands and personal shopping. .