The estimated bill of materials for the G1: $144. The estimated bill of material for Apple’s 8GB iPhone 3G: $160.

Now, iSuppli’s estimated bill of materials for the G1 is based on component and materials costs alone. It doesn’t account for other expenses like research and development, software, shipping and distribution. It does, however, account for “wow factor,” of which the G1 apparently has a paucity. Though Tina Teng, iSuppli senior analyst of wireless communications, described the G1’s interface as better than average, she said it “still has a gap to close with Apple’s interface” and “lacks the wow factor of some of its slicker competitors.”