Surely this is not the thread to continue discussing the costs of science skills.
We've known about the escalating cost of book production for quite a while and that topic has been discussed at length elsewhere (as linked by various prior posters).
As to the Explorer Science Skills:
Looks like the skills and/or descriptive needs a bit of polishing... or are there really 2 skills to increase chance of Titanium Ore and another to increase amount of it?
Mostly I am reserving my judgment until I see the actual tree (and perhaps a re-writing of the skill effects).
I do wonder though if Bean-A-Colada might be a better way of getting magic beans (no bean smiley found) than throwing a load of troops at a fairy tale adventure...