Since I spent half my starting play time grinding Craft/Gather classes just to help gear my main & a friend back in 2.0 (was a war of attrition as he was just grinding his main fast, to the point I had to pull dubble play time to keep up... fond times) I have yet to need gil since then, If you can stand the dead-repeat grind of mat farming as a Gather class just to sell stuff on MB you'll find gill is very easy to obtain in a pinch, or gind quests/leves or DF bonuses or rare mats from other sorces or... I think you get the point.