Hi Catdoc, you have the option of selecting the 4 count or 8 count. 4 count is about $10 the 8 count is about $15. You should see the option in the product selction; right under the sellers name and shipping option.
Underneath the words: "Unit Count" there is a box with a 4 and a box with an 8. The price changes when you click on one. So thats why the description and image might be conflicting depending on the option you pick. Hoped that helped!
4 AA size batteries. Rechargable. One can also purchase these batteries along with a charger,combo pack. Much better deal. I will never use nothing but rechargable batteries from now on. Save lot's of Money this way!!