In need of help evaluating prices of my bundled game keys in trading cards.

see what others are doing and adjust accordingly. there aren't exactly going rates in cards, everyone just kinda makes up whatever # they want at the time for the most part. i guess what im saying is, see what others want, and adjust it according to how fast or slow you wanna sell them.. less cards = faster sales, more cards = slower sales... =)

Trust me, whatever it's worth, they'll only give you half.

Cards are crazy, because most traders deal in "X amount of cards", often stating "I only accept cards over Y value". I usually state my price in actual cents (usually 4% of the game's undiscounted USD store page price) and get the cards according their market value.

But there is no consistency. Sometimes people offer you an exact deal, sometimes they expect you to set the price. For games that are available in bundles often, don't expect more than 3-4% of their store price, but that doesn't mean games on the bundle list are always cheap. (For example, I have declined offers for my The Hive key, because even if it was in a bundle, the key is easily worth 5€.)

You asked about Risen 3 so I tell you how many cards I believe it's worth.
It's currently being sold in a bundle for 1,49. A tier with 4 games. So you are paying less than 50 cents for it. [37 cents to be exact]
In my opinion [and that is what I would ask and how many cards I would be willing to give], it's worth around 10-12 cheap cards.

for example
1 random-card price=0,05$
Base price for Risen 3 - Titan Lords=14.99$, its bundled, so lets get only 15%. Bundled price=2,2485$
So key for Risen 3 - Titan Lords=2,2485/0,05=45 random cards ¯\_(ツ)_/¯

Personally I usually trade all of my low-tier bundle leftovers for 5 cards each. Depending on the cards I get, sometimes I make a bit of profit and other times I lose out a bit.

For pricier stuff, I will set a price and go with steam.tools to find cards that will match that value (after fees)