s Choice Anker Prime Charger Read more Available on Amazon Amazon s Choice Anker Laptop Power Bank Read more Available on Amazon Amazon Anker charges exactly the same cash price on Amazon as it does on its own store for all five chargers and power banks we checked, even though the two sites advertise different discounts on the same $104.99 power bank. Black Friday is still four weeks away on November 27, and Anker’s current promotion is a Halloween sale rather than a Black Friday one, so the useful question right now is which store and which charger give you the most for your money. Here’s what each one costs, where the real differences hide, and the Anker charger we’d buy today.