Cool game, but I don't see the point of upgrading your items. like you spend five items to get one item worth 2.5x? thats only half as good as having the original five items. I figured further upgrades might be better, but they all have the same conversion of 5 items for 1 with x2.5. I also think the progression could scale better, as after you can start buying chests every tick the game very quickly scales to the point where you can buy most upgrades and helpers, and suddenly you are buying the last chest without having ever purchased an in-between quality chest.
Very fun concept, but could definitely use some work