I understand the expansion is new, and that spells will eventually be obtainable by an alternative method. Every example you listed above was obtainable from mob drops/chests/Bcnms/etc. upon release. The price you listed for sch/blm/whm/rdm is irrelevant, as you have the choice to buy them, or obtain another way.
I don't feel like Geomancers should be "punished" for wanting their spells upon leveling. The colonization levels for the various coalitions only seem to rise with the conquest tallies. To my understand/speculations higher ranked coalitions will be needed to enable "special reives". Leaving us with the options of 1) Pay the insane prices. 2) Play the job without experiencing all it has to offer.