I've had all good experiences with TMR in the past both buy and sell.
Recently, they asked me about a preamp and upgraded SS amp I thought about selling, and I followed up just for grins. Was not expecting anything really.
Their one-up buyer said they could not even offer me "anything" on the matching set. Firstly, due to some rarity and low volume production of these units - I suspect they might not have known much about it or the expensive upgrades from an industry pro. And, Its also possible they have a glut of inventory right now. Might be a buyers market there right now. Fwiw, don't be afraid to make offers right now with TMR - I'm thinking. Worth a try, see what they do :)

