Knowledgeable, but unhelpful
I had been to this store as a kid when I was addicted to Japanese robot models. They were always pretty cool about letting a little kid browse around.
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Now, I'm getting into Automotive Airbrushing, and I wanted to look at what they had. The gentleman there recommended the Badger 360-1 Universal Airbrush. I paid around $177 for it. I took it home, played around with it. I decided to look online to see what others have said about the brush, since it's always good to know any special tricks to use with your tools.
To my despair, I found a site selling the same brush for as low as $99. Across several sites, the price averaged around $120.
I called AAA Hobbies, and talked to the gentleman who sold me the brush. I wanted to see if he could work some deal with me, maybe a refund for the difference, store credit, a return, a trade in. He wouldn't budge. I guess you could call that a respectable business policy, but I now feel no need to return to the store and bring any future business there, if they're going to sell items way above the current market price and then don't want to be flexible if they make a mistake.
My suggestion? Shop online. There's nothing in this store that can't be found on various sites, and many have free shipping deals.