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Does a single purchase button lift product page conversion?

The desktop product page offered 2 buttons: add to cart and buy now. We tested showing only add to cart, and only buy now. Conversion rate moved 0.8% over 15 days, too small to call.

Not significant Desktop 15 days Not called

SURFACE
Product page
DEVICE
Desktop
VERTICAL
Ecommerce (B2C)
PRIMARY METRIC
Conversion rate
VARIATIONS
2

The hypothesis

By showing a single purchase button in place of 2, we will focus the shopper on a clear next step, resulting in more conversions.

2 buttons side by side ask the shopper to make an extra choice: keep shopping or check out now. Too many options at the moment of purchase can slow people down.

About half of desktop orders held a single item, so a direct buy now path suited many shoppers. Add to cart alone, with the cart flyout, could instead raise items per order.

What we changed

We showed a single purchase button in place of 2 on the product page.

In the control, the desktop product page showed both an add to cart button and a buy now button. Variation A kept only add to cart, which opened the cart flyout and let shoppers keep browsing. Variation B kept only buy now, which skipped the flyout and moved shoppers toward checkout. The test ran on a small set of product pages.

CONTROL
Control wireframe
VAR A: ADD TO CART ONLY
Var A: Add to cart only wireframe
  • Buy now button removed
  • Add to cart opens the cart flyout
VAR B: BUY NOW ONLY
Var B: Buy now only wireframe
  • Add to cart button removed
  • Buy now moves the shopper toward checkout

The result

Conversion rate moved 0.8% with a single purchase button.

CONVERSION RATE
+0.8%
REVENUE PER VISITOR
+5.5%

Over 15 days on desktop, the leading result moved conversion rate 0.8% and revenue per visitor 5.5%. Early weeks looked strong, but the results shifted the following week, and the gap did not reach our 90% confidence bar.

The pages in this test had low desktop traffic, so we paused it and flagged the idea for a larger validation test.

What we would do next

Cutting to a single button did not clearly change desktop buying.

On these desktop pages, shoppers did not seem held back by having 2 buttons. The early lift faded as more data came in. The next step would be a validation test across more products, so there is enough traffic to see whether either button on its own makes a real difference.

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