The add-to-cart button
The add-to-cart button and the line right under it.
Why it matters on a supplement pageEvery buyer sees the button. Put the price on it and a short promise under it. Their last question is answered before the click.
Price in the button
The chosen price sits in the button ('Purchase for $49'). Buying once is a quieter outline button below.
Almost every page. Buyers don't have to scroll back to check the price.
The price must update every time the buyer changes an option.
Reassurance right under the button
One or two short lines under the button: the guarantee and the shipping promise.
Every page. It answers 'what if?' just before the click.
Two lines at most, or it turns into a wall of text.
Quantity stepper beside the button
A small − 1 + counter beside the button. The price updates with the quantity.
Products people buy several of at once.
For supplements, supply cards are usually clearer than a plain counter.
Sticky add-to-cart bar
When the button scrolls away, a bar stays on screen with the chosen option, the price and the button.
Long pages on phone. The button stays one tap away while shoppers read.
The bar must show the option and price the buyer picked, not reset them.
Upgrade card below the button
A small card under the button offers a bigger or mixed order ("Combine favorites. Save more.").
Brands with a range or bigger bundles. The first choice stays simple; the upgrade comes after.
Keep it below the button. Above it, the upgrade competes with the main choice.
Not sure which one fits your page?
Book a free call. I’ll bring one idea made for your product page and the test to run.