there is a huge diff between block prices and retail, usually 1500 diff on cars of this value, yet alfa's are 3-4k.
having been in the trade, I would suggest its not so much that they are worthless trade ins - yes, this does have an influence, but more that they are over valued retail prices.
They are worth more than insignia, which is a car that's worth pennies, but not by a huge amount.
They may be worth 1000's more on autotrader, but are they selling? and if so, to whom? and after a new gearbox and expensive warranty has been applied, along with the dealer dropping their pants, or simply giving up trying to sell it after the industry standard 6 week pitch and banging it back through the block?
Are we truly realistic on the value that we impose on our cars?
lets face it, chassis dynamics may be good (on the Ti at least) but the diesels never set the world alight and the small block petrols weren't really worth the effort as their prices drop quicker than a pork pie at a jewish wedding, then the great sounding V6 has a niche market as deep pockets are required just to fuel it.