I just picked up a VERY rare Sony ST-SA5ES tuner on Ebay for the (IMHO) very low price of $100. This tuner is even rarer than the TA-N90ES amp, although obviously not as valuable.
The seller said it was in excellent condition - I hope it is. The pictures were not very good and there was some tape residue on the top of it but that should come off. The seller has very good feedback so I am hoping for the best.
After I get it I will have four tuners - the SA5ES, SA50ES, S730ES, and the S700ES. Gonna have to sell off a couple...
I will post pictures when I get it.
Mark