You never have to deal with that again.
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Also, if you play a new bass at a store for more than a minute or two, you're just killing time.... and wasting others'. You can tell quickly if a bass is right for you.
Having worked in a store off and on for a decade, I can tell you, even before the internet was king, most people came in to kick tires. They had no money. They just wanted to play something nicer than what they owned. Gospel keyboard players were (by far) the WORST!!!! They would take over the keys room for as long as we could tolerate it.... swapping licks, trying out samples, and doing anything other than buying. They never bought anything..... ever. Most guitar and bass players were the same way. So I can see how employees get a chip on their shoulders or start to ignore potential customers. Most of you aren't customers. You want red carpet treatment and questions answered when you rarely (if ever) intend to buy. And even if you do intend to buy, you just want to play one in person so you can order a new (never played) one online.
So, it goes both ways. As an employee, I never copped an attitude. I did ask people to leave after a while. But I did it nicely. (I usually used a horrible joke. "Hey man. You stay any longer and I'm gonna have you clock in a vacuum the piano department.")
I could smell a real customer a mile away. They had a different way of carrying themselves. They asked different questions. I would bend over backwards for them.
As a customer, it's not my job to police what others do. I can see how it's tempting though.