Back before they marged all glamour prisms into one (and before you could buy them with GC seals) I crafted stacks of WVR and GSM prisms and sold them on the MB, for the wvr prisms I even bought the velveteen from the sylph vendor and crafted a whole stack of prisms right there. Sometimes I'd send my retainer for skins and craft LTW prisms since WVR, GSM and LTW were the most needed. Controlled the market on WVR prisms on Faerie for quite a while.

Now I really just do roulettes and sometimes sell crafting mats from maps, since I saved up 50m for a mansion in Shirogane and then lost Housing EX because server. Sometimes I still make the CP tea and foodstuffs to sell, but mostly I keep 'em for personal use.