That cost is $55 tangibly, but which is more expensive—the money or the emotional damage done by the relentless playground fat jokes for your G1? At least you'll be able to check your email until dinner time. [Seidio via Crunchgear]

The 1400mAh battery adds an additional 400mAh over the OEM version, which should earn you an extra hour or so of talk time. And, as mentioned, it does not take up any additional space, so no replacement battery door is necessary. On the downside, it will set you back $43—which may be a bit more than the casual user is willing to spend. [Seidio]