I have seen sets go for anywhere between 200 and 800 dollars...depending on the quality of course...
The Youngbloods - album - was created in 1966.
Boots - album - was created in 1966.
Reza - album - was created in 1966.
Smokestack - album - was created in 1966.
Compulsion - album - was created in 1966.
What Goes On - album - was created in 1966.
Boom - album - was created in 1966.
Quilapayún - album - was created in 1966.
Revolver, was released August 5, 1966.
On Top - album - was created in 1966-07.
Meditations - album - was created in 1966-09.
The Seeds - album - was created in 1966-04.