Hot topic - warning - warning

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Without getting to windy the basic reason that the copies suck is that the manufacturers cut a bunch of corners to get the price down low enough to satisfy the importer/distributers who are buying them. The importers could care less about whether the case harms the cue six months from now when the fiberboard breaks and allows the nails to poke into the tubes.....
The importers just see the outside, maybe check to see if the cue goes in and out of the case - maybe - and that's it.
Yes, the importers really do sell products that are crap and put their names, made up names or whatever on them. To them it's ALL about profit margins and the consumer is considered to be ingorant and uncaring whether the case protects against moisture, impact and temperature. This last line comes directly from one of the largest importers of billiard equipment.
The margins are much higher on the copies because they can buy real cheap. Instroke cases take twice as long to produce, the materials are light years better, the guarantee is rock solid and the consumer is protected. That is where the cost difference comes in.
Sometimes I buy cheap tools that look as good as the Craftsmans. Once in a while I get lucky and get a lot of use out of the cheap tool but most often it breaks within several uses. All of the Craftsman tools I own have never failed me yet. I have forgotten the price I paid for those tools but whatever it was I got a lot more value than the dollars saved on the cheap copied versions.
The thing is that when I buy a cheap tool I usually know what I am getting. With cases the importer/distributers rip off Instroke's advertising copy and attributes and claim them as their own. So you see things like, just as good as Instroke and so on... which is a complete lie. And this is what gets me the most. These jerkoffs LIE to the consumer in order to sell their junk and then are nowhere to be found when things go wrong.
I got windy anyway. The answer to your question of how the cases are in regards to price is this: If you get lucky and get on that never develops problems then the price was fantastic. If you get one that falls apart quickly as many of them do, then you overpaid. If your cue becomes scratched or damaged in some way by the faulty construction then you not only overpaid but you are likely screwed.
John