Can't see how 16GB for $499 with Wifi is a bad thing. What it does do though, is make the top tiers look very expensive. An extra $130 for 3G is a bit of an ask, but it's unlocked, so not too far of a stretch.
Personally I think they have the pricing right, all be it the top tiers looking less valuable. If the Wifi + 3G comes down to about £450, I'd have one.