The price of cartridges is quite high and will cost about as much as a 5 kg gas bottle filling. Well, I knew that beforehand. But more annoying is the strong drop in performance, I was able to observe during my last two cartridges. The gas cartridges were still well filled 1/4, but virtually no longer use. It just came to no power and the flame was no longer usable for direct grilling's.
I am now switched despite initial concerns in a 5kg cylinder. The remodeling was really super easy and has perhaps lasted 5 minutes. The cartridge is now really only used when we want to be mobile with the grill. Because for the cartridges are really excellent!