I'm sure that Sony don't view it as either "unfair" or "strange",...it's just marketing strategy which is about gettign as much for a product as possible. Consumer product makers like sony look at the overall mindset of people who buy particular products. Anyone who buys a NEX 7 is a 'bigger spender' than one who buys a less costly product so the thinking is that they can pay more for the lens. Also sony is probably looking at the overall 'package' of NEX 7 plus zoom, and where it 'scores' against the opposition by offering a greater spec. As we know, the price will no fall away as other makers launch ever stronger competition with their own models.