When ordering merchandise you tend to have to order in hundreds and thousands as a minimum order. Of course Stanley have a small fan base, so they can't shift those sort of numbers, and you have to really pick and choose the items that can be stocked.
The ideal situation is where you have a supplier that can provide a small number of products, where no backup stock is required. If they sell out they get replaced, if they don't there is a minimum loss of profit and no storeroom of stock to shift at below cost price. Of course these sort of suppliers don't exist.
The lads who work in the shop probably feel like a butcher in a supermarket where head office have only ordered sausage and burgers
