M.A.M. Resale Shop - Why Two Different Stores in One? One for Customers in the front and One for the those Special Customers who go through the Double Doors where all the Best things Are.

Note:  Who decides which customers have access to the better things thats in the back Store. Is it fair that some customers have to pick from the front store  while others get to go through the doors to the back and shop where the better quality items are. One customer told me she has a retail shop and they allowed her to shop in the back store. Why shouldn't the ones who donate items be allowed to shop in both places, the front and the back store. Even more so, why have they separated the store in the first place?