u/AnyAd1075

So the travel soap costs 8$ and is 1 time use.
You get 15$ from a shower task. So you make 7$ per shower task.

The soap bar costs 37$ and you can use it 5x. From 5 shower tasks you’ll make 75$. Which means your profit is 38$ or $7.6 per shower task.

The luxury soap costs 195$ and is 15x use. From 15 shower tasks you’ll make $225. So profit is $30 which is $2 per shower task.