A few hours ago, a friend of mine called me up from a new secondhand store in Worcester...
Friend: "I'm at the new Savers on Lincoln Street...they have a TurboGrafx-16."
Me: "How much is it and what does it come with?"
Friend: "It's $40, and it comes with the power supply, the RF switch, 2 pads, and a TurboTap."
Me: "'I'm on my way."
So yeah, I bought it. It was exactly as described. The system doesn't appear to have been used a great deal, in the sense that the chip slot is very snug. It's very dirty, though, and is missing the expansion port cover. The pads and tap are in excellent shape. The only problem I found is that the RF port is touch-and-go.
I guess I didn't need to buy a fourth TG-16, but I like to have spares on hand, to make frankensystems if necessary, and so that I can ensure it ends up in the hands of a collector.
Just sayin'.