I suppose the idea behind the one-week warranty is that developers are more likely to be messing around with the internals of the device compared to regular customers. If the discount is good enough, the one-week warranty may save lots of arguments about whether a fault is Nokia's responsibility or whether a developer has voided the warranty (by soldering to the USB pins or making a "will it blend video" or whatever). If I were eligible, I'd be buying a developers' device, notwithstanding the short warranty.