market value of my gears

I possess the following amps and start thinking of selling them out. All of them in mint and original conditions. Just want to know their estimated market value at this moment.

A pair of Marantz 9 (Not reissue)
A Marantz 8b
A pair of McIntosh MC3500
A McIntosh 225
A McIntosh 240
A pair of Jadis JA200
A pair of Jadis SE300B

Thanks a lot.