Buffalo Springfield became ground-breakers for what is known as Country Rock. They had their biggest hit in 1967 with “For What it’s Worth.” And for what it’s worth, the 45 is worth up to $20.00. The group was short-lived but members went on to form other groups such as Poco, Loggins & Messina, and Crosby, Still, Nash & Young. Their self-titled album on ATCO Records came in two versions. The one with “For What it’s Worth” is up to $50.00.  A version of the album without the hit can sell for $300.00 today.