Install Ultimate Upsell for Shopify

Thank you page

Thank you page

To see a live example, click HERE.

Note that in this demo store, it won't be possible to buy the upsell in the HERE link above. Also, when a real order is made, via a real purchase flow, the orders will be merged together and shipped only once. The upsell, once added to cart, will skip the first 2 steps of checkout (contact details and shipping) and will offer free shipping on the upsell order. 

You can also disable the Merge Orders option.