Ive got more lighters than I know what to do with.. ranging from $3 ronsons to $100+ stuff from xikar, colibri, bugatti, etc...
the only higher cost torches that I have owned that are consistently poor performers have been colibri... I finally swore them off about 3x years ago.. and will never buy another one.. everything else has worked as well (or better than expected).. to include the cheapo ronsons (the ronsons to be honest, while unattractive, are in my experience some of the best performing torches Ive ever owned)..
Most cheap, no name lighters Ive gotten as freebies or in samplers, etc.. havent lasted very long.. I might get 6 months out of them.. and they die.. thats probably as much due to my abuse (I dont take very good care of torches/lighters.. I throw them in drawers, tackle boxes, glove boxes, etc.. leave them outside for days at a time, etc..).. as it is their poor quality manufacture.. and probably has something to do with the fuel I put in them as well.. I've been pretty bad about just using "whatever" (zippo or ronson butane mostly) in my "cheap" lighters.... Ive found that ronsons dont have a problem with cheap fuel.. but most of the other stuff I have owned will gum up pretty quick unless you feed them triple refined (or better) fuel.... the fuel you are using MIGHT be the source of your problem..
generally when you pay a whole lot for a lighter youre not paying for more reliability.. youre paying for "pretty" or "cool" or "ergo dynamic".. etc.. some makes/models are better than others.. but for the most part, if you buy something of reasonable quality.. treat it well.. and feed it decent gas.. it should last you for years (Ive got a xikar thats probably 7 or 8 years old that is still going as strong as the day I bought it.. and several ronsons that are at least 10x years old.. that still function perfectly.. etc..)..