Yes--there is a shop where you can buy bread at the CR. You can also get 2 slices of bread in a pkg(baggie) at the Contempo Cafe. I am not sure on the price of either one.
We had Gardengrocer deliver an order in July. There was no service charge from bell services for our 2 cases of water and 1-2 bags of groceries, so I'm not sure what you're talking about. GG does charge a delivery fee, and they require a minimum order. Also check out
www.wegoshop.com. They don't have prices on their webiste, but they charge actual prices they pay at the store plus a delivery fee and I don't believe they have a minimum. My friend is at WDW right now and had her order from wegoshop.com--she said she was very plesed.