320 in the US really isn't much car for your money. You're losing the great engine, you're tied for fuel economy, and once you pump features you'd want in you're bumped up to almost 45k again. They remove things like the folding rear seats from the base config too apparently.
At that point I think the Japanese cars become a lot more bang for the buck, but a lot of buyers just want the badge and a good lease price so they'll sell a ton I'm sure.
Current: '15 M235i Vert
Previous: '13 335i, '08 TL-S, '00 Corvette