Cheers 182, makes sense what you say. I'd just heard that production had been slow on them, hence they've kept their prices quite high.
Just going to sit tight for the time being, other things like re mortgages to take care of first 
well, they had production issues with them, but they only really sell to the new car market, so when people spec a new car they have been struggling to get one with the unit fitted, i guess more will reach the second hand market as more cars have them fitted , i.e from being stolen or scraped etc, as i say though prices will remain reasonably high until VW produce a better / newer unit, how much are you wanting them to reduce to ?
PS , for info & iirc the units are produced by Siemens VDO and not Blaupunkt like the previous VW units were