Costco offers its members the Shark Professional Steam Pocket Mop
. (Non-members face a $2.99 surcharge.) With $7.99
for shipping, that's the lowest total price we could find by $7, although we saw it for $23 less on Black Friday. It features three steam modes, a 2-sided steam-cleaning head, advanced carpet glider for delivering steam deep into carpet, and extra large water tank. Deal ends August 28.