AnkerDirect has the 10-Port Powered USB 3.0 Hub (7 data, 3 PowerIQ) on sale for 31.99 after using coupon P20SAVENOW , expires 1/28/18.
Alternatively, the 7-Port powered hub is $24.79 AC if you do not need the 3 PowerIQ ports.
Price Analysis -
It appears that 32.99 has been the lowest price for this item on Amazon, so this is the best sale price I have seen so far. Also this coupon works for all ankerdirect products. There is a promotion that states "EXTRA 10% OFF WHEN YOU SPEND $100 OR MORE" but I’m uncertain whether it is stackable with the coupon code.