Well here are two, a 3-pin wall wart and a cigarette lighter version:
**broken link removed**
**broken link removed**
Quite reasonable pricing really.
If you were considering plugging into a computer then you should be fine at 70mA for powering from the USB bus. The limit is 100mA until power negotiation is used. However, there is a limit of 2.5mA during USB suspend mode. I am not sure whether you can modify the data lines and use the power only, there are USB charging specifications that allow this but I've not looked into them.