One thing that always impresses me is how there are levels of quality to everything, even if we don't realize it.
Maybe quality isn't the right word; craftsmanship is probably better. For example, I just bought some playing cards. You know, a deck of cards? The ones I got are 100% plastic. They don't rip, tear, or warp. You can wash them. They're great.
Of course they cost more than regular old paper cards, but the craftsmanship is worth it.
What's interesting about this is that this is true with anything. Sure, there are always low-quality things that are just fine. But then there are the high-quality versions. Cars, woodwork, paper, cards, glasses, food -- it's true for everything.
Anyway, I find this interesting. I like noticing how oblivious we are, usually, to issues of quality and craftsmanship. And then every once in a while you find something and you think, wow, someone really put some thought into this.