Current pricing for a modded SA7S1

@geoffkait What teens do you know who are listening to CDs?  Ironically, I know of a couple who have wetted their piggies in the vinyl pool, but CDs?  Nah.

I kind of doubt the market for CDs is shrinking since the market is mostly comprised of teenagers. 👫

Even worse, many audiophiles are moving away from spinning discs in favor of using their computers to feed their system.  The market for all spinners is shrinking!

I have a Marantz SA-11S1 that had the Ultimate Tube mod installed by Chris Johnson of pcX.
I tried to sell it a couple of times over the past few years, but finally gave up and kept it. I still use it as a back up.
The upgrades cost around $3400, but most folks were only willing to pay a couple hundred more than a used stock unit would go for.

Basically, modded units don't have much value on the used market.
This is a generalization, there will always be some exceptions.
Normally though, you will be very lucky to recover 10-20% of the cost of the upgrade.

Good luck.