HOW “FREE SHIPPING & FREE RETURNS” AFFECTS CONVERSION RATES

Summary from the TLDR Marketing newsletter

Mentioning "Free Shipping & Free Returns" under the add to cart button tends to increase conversion rate for products with price-sensitive customers. However, this addition can have a negative effect for luxury items, as it could degrade the premium feel of the page. What works for one site or industry might not work for another, and visitors might need multiple reminders of a value prop on a website.