[special-K]

The mega-vendors tend to sell whatever is cheapest for them to buy. The Mom & Pop vendors tend to sell what they find to be best. They are in the business through being fellow enthusiasts and they don't have a customer service department staffed to keep returned junk orders revolving,take complaints,or absorb the losses this creates. They want to avoid that headache,not accept it as what it takes to operate in volume. They are lower volume and every order counts to them. They may even remember your order if it has been placed recently if you have reason to call on it.