Amazon.com Help: Order with Free Shipping by Amazon
five to eight days after all your items are available to ship, including pre-order items.
FREE Shipping by Amazon - Amazon.com
Order $25 or more to qualify for. FREE Shipping on over 100 million items.
Amazon Free Shipping Code Orders Over 25 : Useful Links
to help you get above the free-shipping threshold without going far above it.
Non-Prime members have to order at least $25 of eligible items to
“ Free shipping on orders over $25” is what it is supposed to say when
Select free shipping during checkout, complete your order, and wait for items to
setting in their listings, where orders over $25 include free shipping.
Amazon's total purchase in order to qualify for free shipping is $49 (although select book purchases qualify when the total is $25 and above).
All the ways you can get free shipping on Amazon, whether you have Prime
Code. $10 Off Your First Prime Now Order + Free 2-Hour Delivery For Prime