Shopify app · Live
MRP Discount
% off the MRP, not the sale price.
Shopify takes a percentage discount from the sale price, so a "50% off MRP" campaign quietly gives away more than it promised. MRP Discount works it out from the MRP instead: one code, made in the app, live at checkout in about a minute, no theme edits.
On our own store, a flat 50% off WhatsApp campaign returned 15x what we spent.