Anyone else having issues with this? I noticed that I had a 90% off from Two Worlds: Epic Edition, which I am sure I didn't have before. I tried to give it to my friend, and it changed to 65% off from Cities in Motion. Odd.

Anyway, he gave it back with a random other coupon, and they -both- changed to 90% off from Two Worlds: Epic Edition when they hit my inventory...

Funny thing is, that they work. They attach themselves to the game, bringing the price down. What a weird bug.

Maybe they change according to a game you both have? For example, maybe you have Two Worlds II, but your friend doesn't...