I haven't done much by way of crafting, but gathering + selling materials from the Diadem during Ishgardian restoration rankings, I made something like 30+ million gil (starting from 1.5 million, minus costs for gear needed to gather).
Still trying to clear the materials out of my inventory by selling, which can net me anywhere from 100k to 500k per day. Things don't sell at quite as high a price or as frequently as they did during rankings, but it's still a fairly reliable source of income!

Basically, people will pay for convenience, and I've made far more from selling raw materials and fairly basic things like thread in bulk than I have off of any mid-level crafts. Haven't maxed any crafters, so I can't really speak for those.

Also, my retainers seem to enjoy bringing me back some fairly expensive glams and furniture pieces from quick ventures, so I either don't need to pay for them myself OR I can sell them off for a nice price. There have been times where I don't have time to play, but I'll just log in real quick to refresh my retainers' ventures, lol