There was a thread on ABS a while ago about the prices of classic Vauxhalls compared to equivilent Fords. The point seemed to be that the Vauxhalls / Opels don't seem to hold the same value and there really isn't a reason why they shouldn't.
Omega is now going down the worthless slope due to fuel costs and the World thinking that scrapping your car and buying a new smaller one will save the planet (Don't start me on that one!). It'll reach the same territory as Senators and Carltons eventually but I guess that's a few years away at present.
The good side of lots of cars being scrapped is there are plenty of spares to keep ours running for now!
While that estate is up for good money, if your in the market for a large RWD estate with a decent engine it'd still tempt me because, as Martin says, 'What else could you get for the money?'