Hi!
I understand that you originally decided to rack up the prices of trinkets in the Token vendor store because people were essentially spending tokens on simply buying them and vendoring them for a quick crown boost.
While raising the cost in terms of tokens is a great way to keep the trinkets out of players' hands for this very purpose, it is unfortunately also a great way to keep the trinkets out of players' hands... period. There's really no great reason right now for anyone to spend all the time and effort it would take to get, say, 200 Grim Sparks so that they can put on two Dread Skelly Charms, or some other similar situation of the sort.
If you must make a fix of the situation, then simply make obtainable trinkets cheaper. Alternatively, adjust the prices on certain trinkets according to how valuable certain tokens are (Primal Sparks are everywhere, it's okay for those trinkets to be more expensive -- Grim Sparks and Forge Sparks, not so much).
Another, smaller complaint is that Grim Sparks and Forge Tokens are way, way more rare than Primal Sparks, and a good reason for that is that Primal Sparks happen very often when attacking the Jelly King, while the other two token types occur very, very rarely -- and are not quite so desirable to farm, as they do not occur in areas with bosses.
Food for thought.
Well actually, I think you can get Grim Sparks in Firestorm Citadel, which does house a boss (Lord Vanaduke).
But Primal Sparks are only rare because people keep making beast stratums.
If you kept making Undead or even Construct Stratums constantly, you'd see a huge amount of Grim and Forge Sparks.