How Do I Find A Winning Offer For My Store?
Edited
We recommend you run a "mini-ad lab" called an "Offer Lab."
If you've ran an ad lab in the past, this is very similar, just a smaller test with a more focused outcome.
How To Run An Offer Lab:
Run a simple headline test, and have each headline feature different offers with a generic image of your product (white background, flat lay... no lifestyle.). Use the same automation rules, placements, and other technical specifications from the ad lab. You do not need to double validate this test.
Test a broad range of 15-25 offers anywhere from "Buy One Get One", "25% Off", or "Free Shipping to US". Then, move the winner of your offer lab into a full ad lab to find an ad that best reflects that offer.