Apippa‑Custom Price Calculator

I used this app to work around the 100 variant limit - selling my products by linear foot. It's quite a powerful app - being able to write custom formulas for the variables you would like to include in your calculator makes almost anything possible! Sahil especially was very helpful when I wasn't sure how to set up additional "handling fees" for certain variables.
Unfortunately this work-around does not translate to the back end (for sales reps creating orders in admin), but for customer experience on front end it is awesome!