6. Sell Off Your Synthesis Items to Get Some More Zel
WriterParty.com noted that there's a pretty easy to earn more Zel - sell off those synthesis items:
It's easy to run out of Zel when you’re doing some heavy evolution. If you run out of energy, too, an easy way to earn more Zel is to go back to the Town area, go to your items page, then sell anything that you don’t need. You'll collect TONS of synthesis items throughout battles, so if you don’t often synthesize, sell your crafting items in order to earn more Zel.
Head to the next page to learn about the right type of party members you should bring with you in battle!