I don't think it's a perfect correlation, but I'd say from what I've experienced, it's generally true that you get what you pay for.

There's inflated luxury, no doubt - but this site is great for research into if a product is worth it for you or not.

No price does not always matter. I have seen toys that are horrible quality, really loud ect that are more expensive than Fun Factory or Lelo toys.

It depends on what kind of toy you're dealing with. Glass toys, for example, can be anywhere from $25 to $200 and have the exact same design and functionality. You're paying for the artistry of the blown glass and it's up to the manufacturer what that's worth. It's pretty subjective. Price doesn't define quality in that scenario.

I've found amazing toys for 10 bucks and horrible ones for over 100, but generally, price does matter.

I won't say price always matter, but with a few exceptions I've gotten better use out of most of my pricier toys and I've quickly killed most of the cheap ones or had to perform surgery on them to keep them alive.