Is it? Sounds pretty normal to me. Belkin is a pretty good brand and charges accordingly. Like Apple, really.
I think that for their target market $300 won't be a barrier at all. In fact after checking it out I'm pretty tempted...
Even worse, the price is not really $300 - in order to use it, you'll need a thunderbolt cable which is nearly $40 (!).
There are few to no storage solutions that can benefit from thunderbolt over USB 3.0 and the whole ecosystem reeks of greed and vendor lock-in. No, thanks.
> one could easily use a regular USB 3.0 hub and attach a USB NIC, sound card, etc. Perhaps not as clean but a hell of a lot cheaper
Great, go and string together your tangle of bargain basement crap all over your desk. The whole point of these docks is to not do that.
You guys are not in the target market. I'm surprised you even have macs.