Review of First to Fight

I saw this movie as a kid when it first came out in 1967. My father let me use his automobile to go to the local drive in theater to see this movie. I was quite impressed with it as a young lad and join the Marine Corps six months later. This movie has a lot of sentimental value for me. But, I'm a little confused as to why it cost so much at $49.00 and change on VHS. Can anyone give me some insight as to why this movie is so valuable? I want to purchase this movie but not at the current asking price.

Thanks

Claude W. Butler