For Patona battery you pay only 15.80 Euro. The Canon battery costs more than double. For this price you get will also find a very neat. comfortable to wear camera bag that has enough space for the camera, two lenses and a lot of filters, memory cards and other accessories. The bag is sturdy, well made and looks neat. I have to complain that the camera bag was indeed made of water-resistant material, but the built-in rain cover is missing, the high-quality camera bags - also this manufacturer - have. Likewise, I have to complain about the little limp engined and fragile plastic closure pocket. Again, it would be better - as in the more expensive models - to put on a secure metal closure. But - as I said - at a cost of 18 euros to the battery, the bag is a real bargain.