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Amazon [amazon.com] has UNITEK 10-Port USB 3.0 Hub with 5V 4A Power Adapter for $ 14.83. Free Shipping with Prime.
Instructions:
Add 10-Port USB 3.0 HUB [amazon.com] to cart.
Proceed to check-out.
At payment method add promo code 9O4GF3YD
Price drops to $ 14.83 (Save 53% and the code looks like it works on more than just 1)