Advice on trustworthy audio resellers who check condition, offer trial period?


I'm wondering what resellers you find reputable for your purchasing. I've made three purchases with Tmraudio.com (The Music Room) in Colorado and they've been great. They guarantee their items work, have a 14 day trial period, and an easy to navigate website.

What other sites do you know of like this — not just that connect sellers and buyers, but that take in used gear, test it, rate its cosmetic condition, and offer a trial period? (I'm a bit wary of buying, say, an amplifier of $2k only to find it's not what it's supposed to be.)

This could be a general site, like The Music Room, or just a store that does this (good selection, prices, trustworthy, and trial period). Thoughts?

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TMR, Hawthorne in Seattle, Audio Classics in Vestal NY and Gig Harbor Audio are my used gear go to to buy and sell
Great -- thanks for those. Some list their policies about try-out, returns, shipping; others don't. A phone call could take care of that, I'm sure.
Hawthorne and Gig Harbor Audio are also great, I've bought a number of things from both.
I second what @rego said: Reno HiFi gave me very good service when I tried out a Pass X250.8 a year or two ago. Really great people.