What the title says, I saved up 10 ST, and only then realized that the impure force is out of stock so I can't buy it. I also don't posses the TC to buy it from the market, and it would be out of stock anyways.

In short, you give me the impure force, I give you anything from the store that's equal to 10 ST, or less. It can be multiple items, all that matters is the total.