How many dealers do you use?

When buying gear retail, do you use only one dealer with whom you develop a relationship, or more than one? 
Whomever has the product and best price. Not tied to one dealer. I especially avoid those that try and charge full retail.
0 for over a dozen years.last dealer was the used dealer in pdx. I attended ces and rmaf and got many ideas on what to get. Problem with most dealers is that they don’t have all the gear you want. 1 dealer might have the speakers you want, but not the amp or dac. No dealer is going to recommend a piece of equipment that they don’t sell. I always try to buy new equipment with a 30 day return policy or if I buy used, I’m prepared to delist the piece if I don’t like it