I don't have a 159, I've just come upon this thread and find it interesting.
First, the cost of the tyres doesn't necessarily reflect the miles they'll do, especially when you're not comparing tyres of the same size. I bet the tyres on your 159 are lower profile, wider and larger diameter than those on your Skoda (these things affect cost), and that it may well be impossible to pay 250 pounds for tyres in the Skoda's size. Also, the choice of tyre compounds available in lower profile tyres may favour traction over treadwear, whereas Skoda-size tyres may typically favour comfort, fuel economy, treadwear etc over traction (hence lasting longer, all things being equal?).
Second, remember how the Alfetta GTV came out with just the rev counter in the normal instrument cluster position, and the speedo housed over in the middle of the dash out of the driver's line of sight? Alfa might have been getting a bit fanciful, thinking all of their customers were such sporty drivers / nutcases that they'd just drive flat stick everywhere and only ever refer to the rev counter. Maybe they've done a similar thing again with the 159 - released it with toe settings which would make journalists and test-pilots think how wonderfully sporty it felt, but which in the long term just aren't practical.
The GTV got its speedo and rev counter interchanged, and the 159 got its alignment settings revised.
Perhaps that woman at the dealership just wasn't aware of this, rather than being deliberately trying to con you. I also wouldn't class these factory wheel alignment settings as a failure of your 159, and I'd say maybe your rear tyres weren't replaced - they could just be old ones off the front. Rather than blaming the car for this and rage-quitting it for a Toyota
, I suggest becoming a smarter owner with the help of this forum.