I have quite a stock of true dungeon tokens which were given to me by a long time friend and long time true dungeon player. We went to gen con this year and I gave it a shot, but true dungeon just isn't for me (I'll stick to paper and dice

During setup and in the game I/we had quite a few comments about rarity and value of some of the tokens I had. I was not aware how collectible some of these are.
I have no use for them, and since they are apparently quite valuable, I'd prefer to sell them and do something good with the money. It's a long story I'd rather not get into the details of, but suffice it to say that sadly, my friend soon won't need them any longer and wanted to do something nice for me. I'd like to return the favor if I could.
All that being said, and me knowing nothing about true dungeon other than two attempts at it this past weekend, and what I've read here on the forums today, I'd like to research what they may be worth and decide how to sell them.
I looked at the token website but it does not seem to have values. I tried google but that is very hit or miss, if a certain store even has a token, or if it's a reasonable price. I was into MTG years ago and sold my cards to a wholesaler, so I know the difference between book value, actual value, and wholesale value of collectable things. I just have no reference for these.
Is there such a resource, or do I need to start googling my butt off?
It's a pretty big bag, probably in the area of 500 or so tokens in all? It seems the black ones are worth anything from pennies up through a few dollars. Red seem to be rare and worth more? Or not? I saw some red ones online that were actually less than some black ones? It was the purple ones I got the comments about and I googled a few and those seem to be the most valuable. Then there are the GP/gold ones that seem to be worth more regardless of color.
Long story short - there are a lot, I am confused, and would love some help. Can anyone point me in the right direction?