eBay with buydig has the Dyson V12 Detect Slim Cordless Bagless Stick Vacuum (Yellow/Nickel, 405863-01) for $500 - 20% off with coupon code PRESDAY20 [Exp 2/21] = $400 with free shipping.

This lightweight vacuum has up to 60 minutes of run time, laser that reveals microscopic dust and advanced whole-machine filtration.