Although not rechargeable, the B195 Battery Powered Toothbrush offered by IBP Healthcare is a reasonably priced alternative electric toothbrush.
Using round-ending Dupont bristles, the brush cleans teeth at 20,000 movements per minute. This makes the brush suitable for people with sensitive gums and teeth.
The toothbrush comes with a rubber gripped handle for ease of use, and is non-slipping.
IBP Healthcare electric toothbrushes
B-091 Sonic Rechargeable Toothbrush