http://www.sephora.com/ Specialty/Other Vertical Accordion 100 seconds
Sephora is another example of a clean accordion-style checkout inhibited by forced account creation.
Forms are well-organized, and aside from a visible promo code field is mostly absent of distractions and necessary fields. But Sephora not only increases friction by forcing account creation, they do it in a distinctly irritating way by putting the account creation step at the end of the checkout.
The Sephora Desktop Checkout complies with 68% of our recommended best practices.