+1 @ facten.
To the OP you probably don't want to hear this but most of the above has been my experience with buying small brand no-name cables. There are some great values out there with basically one guy making cables out of his garage, but resale value sucks pretty much without exception. Just accept that when buying the cables. Getting 30% of "MSRP" will probably be what they are legitimately worth which is around $100. The market has already told you they are not going to pull 80% of retail. If that is too hard to swallow keep them.