DICE Team@Kaira-UK-It's never as simple as that. Let's say that from a 20$ skin, 15$ are profit. If you sell that skin for 10$, the profit becomes 3 times smaller, so you need 3 times as many buyers. In reality, the price drop may increase sales only by 20% instead of 200%. On top of this, if you consider the fact that all products need to get a discount after a while, when they aren't trendy anymore, or if they don't meet the expectations, things get more complicated.
Then, consider how volatile the games market is. A game may have excellent cosmetics for excellent prices, but at any moment another one can come and steal like 50% of the playerbase together with their spendings.
