I have similar Ultra Mini Bluetooth 2.1+EDR Dongle, including, CD with software. Bought for aprox. 7-10€, The dongel,It's work very nice, with the great software developed by site ovner. So I can give my best recommendations. Just rember price have to be proportions to the product. and compaired, costs wireless usb-adapter (wifi),  around 10 €. So it is just to use common sens and opportunities on the wide world web. Remeber to check if the applications are approved so it are included in price, otherwise, you will discover that the price is a completely different if the bluetooth program must be purchased in addition. Have fun and enjoy the opptunities whit this grea gadget.