Is there a free classical album value music guide?

Answer:
The printed publications of this sort are not free ... many are available online, but require some form of subscription payment or a one time fee.

Another source of this type of information, free for the taking, is to participate in a classical music forum (online) where other classical enthusiasts participate in a plethora of discussions about classical music. One can learn from others in that kind of environment with your only investment being the time you spend perusing those sites.
First answer by Bozidar. Last edit by Bozidar. Contributor trust: 1657 [recommend contributor recommended]. Question popularity: 1 [recommend question].