Of course prices are fluctuating right now. The game JUST came out. People are still pushing classes to 50, things are moving fast and niches are being filled. SE isn't addressing the market right now because (rightly so) it hasn't settled yet.

Why would you spend your time working a 'faucet' anyway? Its bloody community service. Look out for yourself- make money on the market and make as much as you can. Only work a faucet when profits come down so far that its the best sell. If the market breaks because of inflation/deflation then its up to SE to fix the problem. Players shouldn't be sinking a hundred hours into a gil-source to save the economy.

Profitable crafting means get good at HQ-ing equipment and look at the market board before you make it. See a profitable opening, make an HQ item and drop it on the market.