As previously mentioned, the Grande Marche is a good supermarket on the Dutch side and their wholesale branch is called Prime, located in Cole Bay. The Cost U Less is like a Sam's or COSTCO and is a good option for bulk buys. We still find the prices on the Dutch side to be a little better, just our opinion.
Fair winds and following seas! SSN691-May She Ever Prowl The Seas in Defense of Human Freedom! SSN787-Preserving Peace, Prepared for War