how much will a regular digital camera charger cost?
I avoid using rechargable batteries in my cameras. They don't last long between charges, especially with flash or zoom lense usage. You can buy a battery charger combo for between $20 and $40US, although you get what you pay for. I prefer to use Lithium(Energizer or Duracell) batteries,but I don't care for the Kodak Lithiums. Lithiums will last 4x longer than conventional alkalines, and won't give you the headache/heartbreak of rechargables when they run out in the middle of the action.
