That was clear from your post. You are getting feedback that this is not only atypical, it is a bad policy that may indicate the dealer isn't very good at their job.To be clear, the fee applies where a prospective customer asks for an appointment to listen to specific gear. It is not an admission fee.
Personally, I would check with the distributor of the brands you are curious about and ask if there are other dealers who can help without charging a fee. And if in-home demos are possible for some (all?) of the gear.