http://www.bestbuy.com Electronics Vertical Accordion 153 seconds
Best Buy's accordion-style checkout doesn't get in it's own way - it's cleanly designed and avoids distractions and unnecessary fields. However, a further increase in conversions could be had by converting to a true one-page checkout and implementing time-savers like address auto-fill and making guest checkout the default.
A one-page checkout should include other form improvements for Best Buy, such as condensing fields (currently every field takes up a row on its own, making it feel longer) and by making guest checkout the default checkout mode.
The Best Buy Desktop Checkout complies with 63% of our recommended best practices.