I was the most tempted by this… which seemed like it could fall into the so bad it‘s brilliant category (basing that entirely on the cover and the blurb) but I wasn‘t sure if it was part of a massive, out of print series - so I left it behind 🥺
Update : just looked it up on GR - it‘s a trilogy, published in 1976 and has a 3.95 rating which is more than decent (maybe I should have bought it after all! REGRET)