Prices in the UK, as placeholders, are going between £170-£230. That, I feel is much too expensive. It's a portable device, I'd be happy to pay that amount for a proper console, but it's way too much for a handheld. Maybe just over £100, then I'd get one.
Also, will it be compatible with GBA games, like the original DS was? Because I don't want to have to keep my current DS to play my older GBA games and then pay even more for the 3DS. I want to be able to trade in my older console, but it's just not worth it if it means I can't play half my games anymore...