This Tzumi IonVac Cordless Vacuum drops from $49.99 to $19.99 at Macys.com. That's only the second time this year we've seen this vacuum priced below $25. It weighs less than three pounds and comes with a lithium-ion battery, attachments, and a USB cord for charging. It runs for up to 20 minutes on a single charge. Log into your free Macy's Rewards account to get free shipping at $25. Otherwise, shipping adds $10.95 on orders below $49.