I'd never even consider an Alfa Romeo due to bad reliability etc,
I'm just... lost... am I dreaming? What's going on. I'm (hoping) to buy this Alfa that I linked. Surely something has gone wrong somewhere, the prices are broken? This just seems to good to be true. How can this car be cheaper than a Golf, I just don't understand. It seems to be such a good deal, I feel like I'm being scammed!
You answered yourown question before you even asked it! Simple as is, Alfas deprecate waaay more then golfs/audis etc, because so many possible buyers just rule out getting an Alfa, based on bad reliability (which was unfortunately true for early 156s/146s)! Bad news for anyone who buys an Alfa new, but great if your looking for out for the likes of an 04/05, which has lost the worst of its deprecation!
In terms of the GT, I picked up one a month ago, I would echo what was said, timing belt and DMF are the two key issues with the 150bhp mjet engine. Also, from personal experience, Double check what exactly was changed when the garage did the clutch on it. My folks bought a vectra from them, with the same 150bhp engine in it, clutch let go after about 50/60k km, brought it into a "reputable opel dealer" to get replaced (cough, the same one in that donedeal ad!), about 10,000km later the clutch goes again, turns out they only replaced the clutch release bearing 1st time out, so full new clutch pack goes in. About 5,000km later the DMF packs in!!, horrible rattle from the car at low rpm!
Very annoying issue, the biggest single cost each time was the labour, if you have to go to the effort of dropping the gearbox to get at the clutch, the flywheel and all should be changed then.