Thank you very much for your feedback, yes, the purchased upgrades can appear again inside the shop and they can't be purchased again. Also not that much different from purchasable ones, my fault. In top right corner there is a "Chaos" meter, with 3 chaos you lose. 2 broken washers will cause only 2 Chaos out of 3 and if you did perfect for the previous shifts you will win without consequences at the end! Chaos meter will increase by 1 for each broken washer or for X amount of socks escaped (varying with cursed upgrades). Thanks again for playing and for your detailed comment!