bought one of these NOT A GELERT but a Garden Kraft, which looks identical, no doubt they all made in the same factory in the far east somewhere. I used it on 5 separate occasions, the first 4 without any issue. On the last occasion after about 5 mins use, flames started to lick out of the side where the gas canister is, within 5 seconds we had turned the stove off and raised the lever to release the gas cylinder, yet the flames continued! Within another 5 seconds the cylinder blew up sending out a fireball and literally blowing the stove apart, sending pieces of metal in all directions. Fortunately no one was hurt, as this happened outside and we had all got back far enough away from it, but the power of the explosion was frightening. The gas cylinder was about half empty (so had been used before and without a problem), and was correctly fitted. The stove was boiling a kettle at the time which fitted well within the limits of the stove trivet. I believe the leak occurred at the valve seat which is just a push fit, held in-place by sprung lever, why it didn't release I don't know, but I don't believe I did anything that anyone of you would have done any differently. A quick search of the web reveals that there has been many such incidents, sometimes with serious consequences [...].
And decide if you want to take your chances!! Please also note that my stove carried no manufacturers serial no or identification marks other than the logo on the front, its my opinion that the design is dangerous due to the lack of a screw fitting for the canister bringing a high risk of gas leaks, and that the cylinder is too close to the heat source meaning that a large pan could raise the temperature of the cylinder high enough to explode the gas canister, as seen in the video using the tin foil.