If they aren't a value to you, then don't buy them. CG will, as @Bruminor said, notice how many people are buying. If they're hitting their revenue targets, the price probably will not change. If they miss their targets, they might try a sale. But every time they have a sale, it makes people think twice before their next non-sale purchase. No one wants to be the person who bought something right before a discount kicked in.
So they're going to be careful, and it's not likely the prices will come down soon, But it's also true that the only thing that will affect their prices is whether or not people actually purchase. So if the price matters to you, make your decisions appropriately and hope the rest of the player base is with you.