Would you pay to listen?

No, as there is little need too. Some hi end dealers such as Overture and World Wide have sessions every now and them where they preview new and exciting gear in the mega buck range. Often providing refreshments as well. And door prizes too boot! It can be a wonderful get together for audiophiles and enthusiast.

Then and other times if I can not afford or desire gear at that time. I do try to make a purchase of music or other items for my enjoyment and respect for the dealers time.

Sounds like you are feeling the water for a business venture maybe?

Not even if there were dancing girls and performing chimps on unicycles juggling flaming swords! Maybe if Natalie Portman was the host.

Danger here. While twenty bucks is nothing for one with a passion for audio, it will lead to many, many more expensive purchases, all because you will never be happy with any but that type of system.

I'd test drive a Ferrari for $20 if I could, so I'd say yes.