This deal has ended.
Update: The $15 off is now expired, but shipping is now free! While supplies last, Overstock is giving away a free new Dyson DC16 Root 6 Pink Handheld Vacuum Cleaner (pictured), a $149 value, with the purchase of select Dyson vacuums.
Better yet, click here to take $15 off $350. Score some serious steals on refurbished models, like the Dyson DC 25 All-floor Vacuum (Refurbished), which retails for $414.33, now $349.99, and the Dyson DC25 Animal Vacuum (Refurbished), which retails for $473.69, reduced from $399.99 to $384.99 with the $15 off. There is no sales tax (except UT).