We are building an E-commerce website for a client that only sells one product (with different size). The customer can buy multiple quantity and different size every time.
Now, we're having a discussion on whether if we should:
A) Put the product add to cart button on the check out page so the customer will have a seamless checkout
B) Or back to the traditional way, where we put the add to cart on the product description page. The checkout page will only consist of the overview of your cart, addresses, and payment details
I personally think option B is the way to go because in option A user doesn't get the full visual and descriptive details of the product on the checkout page. And I also think the checkout flow is weird when you can add to cart and edit the cart at the same page.
But other team members think option A will increase conversation way since everything is on one page.
My question is, if anyone have any experience/suggestion on which flow has the advantages when doing a single product e-commerce checkout?