Yamaha CS80

I have uploaded photos of the 10 CS-60 boards, and some images of the 
"GX1 - Guide to your Yamaha Electone" and the Photocopied Service manual. If you want a photo let me know.

The 10 Boards:
1 Sub Board.
1 Pre Boards.
8 Voice Boards, M1-M8 

I was hoping people would indicate a fair price for these, and the literature below so everyone is happy. As mentioned these boards were in a filing cabinet in anti-static bags with dessicant. The pictures taken of the boards are on an earthed portable anti-static mat. I would prefer people to post what they think these are worth as to give me a fair indication, the last synthesizer I sold went on eBay 2 days later for 4 times what I sold it for, to the person that 'really wanted to use it'. Now although every precaution has been taken with these, and they were workinh 100% before removal. They are used and old (although in good condition), so there are no refunds, in case one has a dry solder joint etc. after 20 years. Most of the literature is in 'mint' condition. People can make me a 'private' offer, but I would prefer to get an indication of their worth. I'm not here to scalp, I only want a 'fair' price.

I also Have the following Yamaha literature 
(I Only have 1 copy of each):


CS01----- S(O), M(O)
CS01MkII--------M(O)
CS5------ S(O)
CS10----- S(O)
CS15----- S(O), M(O)
CS15D---- S(O), M(O)
CS30----- S(O), M(O)
CS30L---- S(O), M(O)
CS40M---- S(O), M(O)
CS50----- S(C), same manual as CS60
CS60----- S(O)
CS80----- S(C), M(O), A(O)
CS70M---- S(O), M(O)
CX5m----- S(O)
DX1------ S(O), M(O)
DX7------ n/a
DX7MkII-- S(O)
DX9-------------M(O)
DX21------------M(O)
GS1/GS2-- S(O), M(O) <-- Both same for both synths.
GX1------ S(C), + Original Guide to the Electone.
KX88----- S(O)
PSR47---- S(O)
PSR3500-- S(O)
PSR4500-- S(O)
R1000---- S(O)
SK10------------M(O)
SK15------------M(O)
SK20------------M(O)
SK30----- S(O), M(O)
SK50D---- S(O), M(O)
SY1------ C(C), M(O)
SY2------ C(C), M(O)
TX7------ S(O)
TX81Z---- S(O)
YPR20---- S(O)
YPR30---- S(O)


Where the letters mean:
Advertising Material, A
Service Notes, S
Manuals, M 
Circuits, C
Original (O)
Copy (C)