Winning a price comparison by changing the unit of comparison

On the search page the brand's razor appears beside a competitor at less than half the price, and the shopper has two numbers and two photographs to decide between. The brand's product genuinely costs less to own (its blades last far longer and cost less per unit), but that arithmetic lived in the founder's head, not on the page.

Advertising made this worse rather than better: every click brought a shopper who had just seen the cheaper option, arriving primed to find the price unjustified.

We changed the number the shopper compares.

• Cost per shave in the image stack: the comparison the brand wins, shown as plainly as the price is.
• Blade longevity demonstrated rather than claimed, with the replacement cycle stated in weeks.
• Refills enrolled in Subscribe & Save, cross-referenced from the razor's A+ and the brand store: the subscription is set up on the refill listing itself, it cannot be attached to the razor at checkout.
• Competitor-aware targeting: Sponsored Display on the cheaper competitor's page, where the cost-per-use argument has the most leverage.

Conversion rose from 5.1% to 8.3% and revenue grew 89%, with the sticker price unchanged at $34.

The refill attach rate more than doubled (22% to 49%), which matters twice: it is the profitable part of the business, and it is also the proof of the pitch, since a customer who buys refills has accepted the ownership-cost framing. ACoS fell eleven points because the traffic arriving from the competitor's page now converts instead of bouncing on price.