Alfa's tend to have a really bad depriciation in the UK.
This is mainly down to peoples perceptions of the brand as being unreliable. Everyone likes them. The looks the tech the engines and sounds. But everyone is put off by the reliability record from the past.
Hence a cheap used buy thats usually over looked.
Best bit about it though is that you car get alot of car for your money.
Also the running costs, tax and generaly maintenace is quite a bit higher than most cars. That coupled with a dealership back up thats one of the worst in the UK means cheap cars.
But don't let anyone into the knowledge that if maintained well they are actually more reliable than some modern cars on the market.
Don't tell the muggles the secret.