Help with some Vintage gear???

So I have some vintage classic pieces and was wondering what they might be worth and where would be the best place to post them. All of the items are basically BRAND NEW and have never been used, mounted or connected. So while they are old (New Old Stock?), they are virtually brand new:

Grace 747 Gyro Master Tonearm with original box and all parts. It has been taken out of the box to be just sit atop a turntable for the sake of taking pictures.

AudioQuest Leopard ToneArm cable- brand new.

Ortofon MC2000 (NOT the MKII). This is the original classic audiophile moving coil in its original presentation box with all accessories, graphs, tools, etc. Never mounted.

Ortofon T-2000 matching step up transformer for the MC2000.

All were purchased by myself new. Any thoughts on what I might list them for and where?  Or... should I keep them and set them up on my Clear Audio table?

Thanks in advance...