I buy and sell on my own and and from TMR, just depends. TMR has to make money to hold these items they bought and paid waiting to sell, check them out get ready to sell, then post in several places. Plus they give a 90 warranty and return policy.
Something I was trying to sell recently lingered on for 2 weeks, with about a dozen people asking questions, and never heard back from any of them. So I had already had a deal set with TMR, when it did not sell after a few weeks, I fell back on TMR. They pay the shipping there. I lost a few hundred bucks, but got it out of here, and awaiting a deposit.