Nobody is wrong on this thread. TMR is a business and they have to make sure their business stays afloat.
Yes, TMR does lowball on items and sometimes shockingly, but it all really depends on the item and how in demand it is.
The people who are the most upset with TMR offers are the ones that paid full MSRP price on the component at an authorized dealer, tax, shipping and all… and a month later expect 80% or more of what they paid. You will not be happy because they will offer you approximately 50-60% of the preowned price which means you could be getting maybe 30-35 % trade value. Ouch!
Also it depends on the item. Popular things that move fast on the market, they are likely to give you more value. Obscure brands and certain items they’ll definitely lowball you cause it just takes them so long to sell that they need to recoup their opportunity cost.
Personally, I traded in a cable to them 8 months ago and they’re still trying to sell it, albeit at 180-200% more than they gave me value for. That was a good trade for me as they had something I wanted. That, and I acquired the cable for the same trade value a couple of years earlier.
More recently, my last TMR trade offer was really low, so I walked.