Hit the nail on the head here.
Not only does every attack require money, but the only way to get it is either by randomly getting items on shift or aquiring the limited supply of trash around the store. It seems like the game is constantly working against me and never giving me a chance. That doesn't make for a very fun experience when it feels like everything is out of my control because I know I will run out of money before the enemy dies.
This concept has a lot of potential but its killing itself right now.