Reduced prices for those BPs to 10k, the thing about blueprints in shops is that they aren't always available, you can get plasma rifle and minigun bps from shop too yet they are worth 40k-50k on open market because how hard it is to find them. Sold 3 Plasma rifle bps for this price so it isn't steep, same goes to metal armor Mk2. Books are cheaper than in the shop so I you can't call them expensive either so in general I am not really sure what exactly are you referring to, my good sir.