Quote - http://www.optitexsmb.co.uk/servlet/StoreFront

Optitex is only available in the UK apparently. Anyone in the UK able to access the page and tell me the price?

The price of the only item at that link is £999
This looks like a cut down version of the Optitex tools (judging by the .com site), so as usual the fact that they don't specify any prices on the main site should be enough to tell you that the other toolsets are going to cost several $k.

Quote - So is DAZ holding the monopoly on dynamic clothing models for Studio then?

They're still trying to figure out how they can release "Hobbiest" priced tools without affecting Optitex's "Professional" market.
Also currently there are only Windows versions available, with Mac and 64-bit stuck at the planning stage.

If you only wanted the ability to create garments from "pattern" like pieces, then Maya's cloth (and possibly C4D's) work in that way.