Hey, check out these auctions:

2 Charger+Battery For Xbox 360 Game Wireless Controller
US $10.50 (0 Bid)
End Date: Thursday Mar-11-2010 8:09:28 PST
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TWO 2 Rechargeable Battery Packs+Chargers for Xbox 360
US $10.50 (0 Bid)
End Date: Thursday Mar-11-2010 8:09:50 PST
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Cool, arent they?