The Goodings store at Crossroads is very high priced. Since you won't have transportation, you should be able to find everything at either Screen Door, the Beach Club Marketplace, or there is also a small Hess convenience store within walking distance of BWV that carries typical convenience store items.
The selection of groceries at the DVC resorts is pretty comprehensive. They carry a little bit of everything. If one store is sold out, check another. It's really nice to have BCV and BWV so close, just for this reason.
If you get to the point you are considering grocery delivery, keep in mind that you could also take a taxi to the Winn Dixie grocery on SR535 (about a mile north of the Crossroads shopping center). Winn Dixie is a lot cheaper than Goodings, and if the taxi fare comes close to the delivery fee and tip, you might as well pick out exactly what you want and do it yourself. You can get taxi fare estimates on the Mears Transportation website, under taxis.