The request
“We use one app for tier pricing and another for minimum and maximum quantity. We want the product page to show the total price for the selected quantity so customers see what they'll pay.”
Two apps, and a total that neither of them displayed.
The approach
We added a running total to the product page that reflects the selected quantity and the applicable tier price, respecting the minimum and maximum limits from the retailer's apps.
What we shipped
Running total on the product page
Reflects tier pricing
Respects min and max quantity limits
Updates as quantity changes