T-mobile's G1 has been given the teardown treatment again by the guys at iSuppli, and their official estimate of its materials price is $143.89. The most costly part inside is the dual-ARM processor baseband at $28.49, followed by the display at $19.67 and the 3-megapixel cam at $12.13. Obviously this doesn't include external costs such as hardware and software development, packaging and the like, but it gives an interesting insight into the G1. And, even more interestingly, it's cheaper than it's competitor, the iPhone 3G: this runs in at $174.33.