I face the same problem trying to progress in desynthing. I MUST craft Level 70 items in order to proceed but each item needs 9 pieces of hardended sap. Buying them from the currency you get from FATES or from returning items to the GC, it takes a hell lot of time. One costs 2.500 so I need 22.500 just to craft and destroy ONE item which grants me a very small progress. 9 per item are either too much or they should cost less. One of these options please, SE.