Currency Usage

So I used to play with a friend who crafted (I don’t and probably never will) and he always told me to use my company seals on cordials for him. Now that he doesn’t play, I have 50,000 company seals, 2,000 poetics, 1160 creation (don’t honestly know where these come from), and 2,000 Mendacity...

I know I can use Genisis on ILVL 390 stuff, but what should I use all of the other currency for? Is there anything that is worth getting, or anything that other players can use? I frequently sell things on the market board for MUCH a less than everyone else (usually about 25% of the cost of the cheapest one listed). If it helps someone out I’d be happy to get rid of it but I’ve been out of the loop for so long on these things, what is even valuable anymore?

If you're not gonna use your Mendacity to gear any lower jobs (with 360 gear), then I'd suggest buying mats from the Mendacity vendor (under Other). Those mats are required for some end game crafts (I typically buy the Groundsloth stuff lol) and can sell for a pretty decent amount.

Yes, buying the mats with those is probably the best use of Tomestones if you have no use for the gear you get with them. Mats can then be sold, you can research which mats sell best first before purchasing since it may be different on different worlds.