I'm with you on sequencing--you may as well go with digital or streaming if the release avoids the original album arrangement.

I don't know if you tried Discogs. I looked there briefly and found a few original LP's of your choice (most copies are reissue / remaster). They tend to average around $100 in VG+ or NM. Of course you don't get the boxed set goodies.

I've used Discogs for some unusual oldies, and the grading tends to be accurate (Maybe 20% ore in slightly worse shape than promised)