Hey @Corporal,
There's not an exact way to do this while also tracking inventory numbers - but an easy workaround would be to add discounts. For example, you could add a $2 discount to the sale for 2 for $22 and a $6 discount to add to 3 for $30.
If you are not tracking inventory levels you could also try using modifiers - this lets you add a modification of an item once you select or scan the item at point of sale.
So you could create the item at $12 then a modifier set that let you select $2 for 22 or $3 for 30. It won't track modified items as seperate items though, so if you're tracking invetory numbers you're best of using discounts.
Hope this helps!
Seamus
Square, Australia
Sign in and click Mark as Best Answer if my reply answers your question.
