I applaud you for taking a moment to provide him with the tools to look up the information himself. Because hey, we've all been new to a situation before, and we've all needed a little bit of help. Of course, he could have just gone to each game's steam page to check if they had cards. Or failing that, checked the steam market to see if there are any listings for the game. But it always helps to have as many tools as possible to get the job done. So kudos to you for helping another CAG out like that.
Makes me fell kind of ashamed over how I acted. If only I had simply taken the time to help the guy out myself instead of flipping out on him.
Oh wait, I did.
I linked him to that exact same website six days ago.
Prepare to flip out on him yourself in six days.