I'm a big fan of TMR. They are the only "institutional buyer" in the audiophile space that I know of--buying at wholesale prices and flipping for used prices. That's a tricky business model to get right, and I'm impressed with what they've accomplished. iBuyers have to staff acquisitions and due diligence teams, sales and marketing teams, figuring out how to warehouse and ship gear, maintain financing backers or lines of credit, and they have to price gear in such a way as to account for the time items will take to resell and the interest the loans will accrue all while turning a profit. I think it's wonderful we have an iBuyer in our hobby, and I'm grateful that TMR is as good as they are.
iBuyers provide value on both sides of the equation: a convenient sale and immediate liquidity for sellers and tested gear for second-hand buyers from a trusted source. I prefer to buy most of my used gear through TMR because of their consistent experience. Buying from individuals can be a crap shoot by comparison--having to deal with exchanging gear for payment between non-professionals while being sensitive to the possibility of a scam. I'm not affiliated with TMR. I'm just a businessman myself who knows when he's being served by a great business. Keep up the great work @tmraudio