I disagree and have purchased many cheap ones. They almost all fail or fall apart pretty quickly.I'm with you, go to Ebay and pick one up cheap. Most of the trendier names, are way overpriced for sure !
The ones I have owned that have last were a front pocket one from Coach (still have it and still in pretty good shape) and one like this from JCrew.
Both were solidly made and fell into the $40-75 range.
Personally I am going with a custom made option for my next one. Info coming soon on that!