Again, same issue with the distributors, they give Bingo an upper hand by giving it to the for cheaper then the other store. This is the reason all the stores are upset, not for their sales etc, but the fact that they get cheaper wholesale
They got cheaper because they buy much more.
One example: Bingo sold countless pallets of chocolate before Purim. They were selling top brands for 30% cheaper.
They might have sold more chocolate than all local groceries combined.
They also have leverage because they are reportedly exploring more locations. Their buying power can double and triple.