I see what you are saying, but I have only had good experiences with my HI-point. I think what posseses people to buy them is they don't have a lot of money. I am of the belief that any gun can be a lemon, just like any car out there.
And I believe the reason that Hi-points are so inexpensive, not cheap, is that they are manufactured in the U.S., therefore no import fees and taxes, and they have absolutely no bells or whistles.
They are a simple blowback style, and they have a not so great but simple trigger.
I guarantee that most of the Glocks and XD's don't cost nearly as much to produce as they are being sold for. They need to add overseas shipping and other fees. Then they still need to make a profit.
So, I don't think they are cheap, I think they are inexpensive, and actually of decent quality.