$8. Price has gone down so you will pay less than I did. Sourced from eBay. No hyperflash. I suspect that you can buy any brand, as long as they look the same with the same specs. Probably all from the same factory in Shenzhen, China. Shipping took forever. Probably on Amazon.com also. Pricing is usually higher on Amazon.com, because they have to stock in USA for Fulfilled By Amazon, Amazon.com takes a larger percentage of sales, and you get 2 day free shipping.