Cheap is in the eyes of the beholder. When I was a kid, a $20 knife was expensive and I treated it well. Of course, those same knives have more than doubled in price now.
IDCAI knives... had to think about that really. I guess I consider Kabar Beckers semi-cheap (certainly value priced).... I don't know. But my BK-15 is likely to get used for most any task since I like the size and more likely to have it with me. Been using the Condor Kumunga as a yard knife and I would certainly take it to the woods as it does pretty well. It was "cheap", but I like it and really don't abuse it. Don't really abuse any knife I own regardless of the price in general although I have been known to play a bit and the playing is certainly a harder use than normal for me.
I have been known to use my Condors hard and they have done well which is why I keep buying new ones. Really don't get much cheaper.... but I do own a couple Moras.
As a kid, my Dad used what we kids called a "buffalo skinner" which was a fairly large bowie knife that we found camping in the woods. It was used for years chopping corn stalks and other semi hard use things around the "homestead". But one could say that this use was "normal" for a chopper sized fixed blade.
Hard use.... another general term subject to much opinion. I guess anything other than simple cutting would be considered hard use. Normal use has become blurred over the years as more people are using knives to split wood and so forth.