Are GURPS Tech Books released in wrong order / badly planned?

[Fred Brackin]

Originally Posted by Refplace

I wouldnt call it poor planning. There were years between several of these books so ideas change.
Also They were released in the order of sales priority and work. The numbers on E23 dont really bear this out but I bet if we added hard copy it would
E23 numbers
Low tech 843
LTC2 826
UT 720
High Tech 621
Bio tech 506
.

Using just E23 will distort things. All the tech books have had hardcover printings and UT has ahd a softcover reprint.