Yes, my reaction too...I don't know what it consists of, other than the bearing. I do know though, that they're often now sold as a 'kit' and may contain some essential little seal cover or some such.
Hiteq are probably sourcing it from a supplier and putting their mark up on it - which I guess is fair enough. As I can't find a supplier I'm stuck with it.
If I had time (I work abroad a lot) I'd get it out and take it around a few bearing factors. I'm pretty certain I'd get a match for it for around £20.
Such is life.......and Skyline maintenance! :>(
PS> When I get it, I'll see if I can identify the number for future ref in case anyone else wants one.