Well a lot comes down to where it was made. Remember an average worker in China is paid about $2 an hour. Torches like Blazer are made in Japan, where the worker is paid considerably higher, much closer to the same wage as the USA.
Also, where the components are made is a big thing. Did they invent the technology, or did they copy it?
Many times a copy is not a copy, but more a copy to LOOK the same, and be made cheaper. When made cheaper, lower-quality materials are used, making many times an inferior product.