No apple product I've purchased has been junk. It's all been quite pleasing in both form and function. I've never used a Mac before though.
All my experience is with iPods and iPads. None of them were junk, and considering the quality of the experience I had with them compared to the many competing products I've used, I'm hesitant to say they were overpriced. I've had media players that were cheaper than my iPods, and their build quality and user experience seemed poorer in a way that was commensurate with their price. I've had tablets that were cheaper than my iPad and their build quality and user experience seemed poorer in a way that was commensurate with their price.
If apple is working some magic that causes them to make better products without incurring the same expense that it would cost other manufacturers, then kudos to them. The fact remains that I am greatly impressed by every apple product I own. Even if they are making more on every sale, my impression of their products is that they are worth as much as apple is asking for them, which is all that really matters.