Well, the real jet lighter must have the price tag on it nothing less than $40. These have the real platinum catalytic element and long lasting construction. The primary cause of China made jet lighters is a failure of the piezoelectric igniter. The second - cheap butane refills, which clogs the fine pipes and grease the metal surfaces conducting the igniting spark.

By the way, the jet mode is very sensitive to gas pressure and to the temperature too. Right after refill butane is very cold. Allow 5 minutes for gas to set. The torch lighters with hand regulation of pressure (no tools required) are much more reliable, because you can adjust the pressure as necessary to overcome most of the above mentioned problems.