You have to remember that the OT book was released in Japan in 1997 before the PT was even out. It was so in demand then that they released an English language version here in the States (Some Japanese copies were going for over $1,000 before that). This book is out of print now, and was going for around $500-$600 on Ebay at times.
In late 2005, a member of the RPF with publishing ties talked to the publishers about a reprint. It FINALLY came out again around Nov. '05, and has become quite popular. You can see the original still listed on Amazon here (Someone is trying to sell their used copy for $1,000) LOL:
https://www.amazon.com/gp/product/1...f=pd_bbs_3/102-7373581-3221763?_encoding=UTF8
The prequel book was a tie-in with the Ep. III DVD, which is why the Ep. III parts are so rushed and inadequate. The same guy who pushed for the OT reprint on the RPF reviewed the PT book, and said that it was a worthy heir to the original, but that the Ep. III saber references were severely lacking. He also said that the PT pictures are too small in some cases, but that it was still a very nice book.
I'm going to get the 2 Chronicles books, the Deluxe Dressing a Galaxy, and the SW 365 days book. That should be enough SW references, then I'll need to start on LOTR and others.