Since M.E.G.A allready owns a C65, i don't think they go for another one.
(espacially, after they are building their own Mainboard atm)
And the manual probably doesn't contain any extra content to what is allready known
from the Fred Bowen manual here: http://www.zimmers.net/cbmpics/cbm/c65/c65manual.txt
do you have a link to the auction ?