The original iPod shuffle was essentially a USB stick with an audio port and some buttons, and I used it in just the same way as this. I think it was only £20 or £30 in price, a great product.
The original Shuffle really was excellent. Amazing audio quality for the time, about as much UI as you needed for a day or two's music, good battery life, and a configurable amount of file storage space if you needed it. And it even managed to look a sort of abstract cool.
Really pure product design.
Shuffle and iPods undoubtedly primed consumers and the market for the iPhones to come!