With 450 craftmanship, 2 careful synthesis II are almost enough to complete the progress of a level 70...then, you suddenly start crafting levels 90, and not even 6 careful synthesis II are enough to complete the progress of a level 90, wtf? Also, not to mention the ingredients...giant catfish, emperor fish lol...? The requirements and ingredients to craft i90 and i110 are absolutely unbalanced and the bonus they provide over levels 70 does not match with the ridiculous difficulty and costs. Levels 70 hq sell for about 4k-5k. Levels 90-110 hq sell for about 50-110k, and the difference is marginal. Occasionally you have some gil buyer spending 4 million gil to buy 99 bacon bread for the lols, but I don't believe legit people would ever buy that, so in the end they are not viable, both for the buyer and the seller. There isn't much difference between HQing a level 90 and a level 110 (except for the craft and control requirements), for some reason the brickwall is set after levels 70.