It's back but the price is better than ever.
Price shows as £42, but it's £37.80 when you use the 10% discount listed on here.
Discount code is "orange10"
This is a portable hard drive, no mains power required, power comes from the USB port. These drives work fine with laptop or desktop PCs, Media players, consoles, etc.
These drives are not suitable for dismantling to use the 2.5" drive for laptops, PS3s etc. The internals are non standard, with the USB port soldered directly onto the drive. So these can only be used as external drives.
But a fantastic price for a perfectly good wee drive. You can't buy mains powered 3.5" drives this cheap. So get them while you can.