Get a certified refurbished Shark upright vacuum for under $100
www.mashable.com TL;DR: As of Sept. 29, grab a Shark DuoClean Slim Upright Vacuum for only $97.74. Use code VIP15 at checkout, and score a total of 57% off the retail price of $229. Known for its performance and reliability, Shark vacuums regularly see high ratings on Consumer Reports. So, when you have the chance to score…