I think that a large factor in yoyo pricing is how much they cost to produce:
Are 2 bits of aluminium with a bearing in the middle worth $150? Most people would say no. However if that yoyo costs $100 to make, then the price can be justified because it’s value increases due to the work and expenditure involved.
The above is why someone like YoYoFactory (who can outsource to china) are able to put out cheaper throws than a lot of companies. I highly doubt the Shutter could exist without this outsourcing, since, (as anyone on these forums that has tried to produce their own yoyos knows) getting them made for you using a US machinist isn’t cheap. Onedrop have an advantage because they are able to machine in-house which cuts off the cost of having to out-source.
Performance wise, I think that spin time is usually negligable and stability is all in the design, not the cost or material.
7075 throws usually cost slightly more, but the only real advantage to them is a slightly denser mass and a lovely shinyness.
Titanium throws are always going to cost a lot due to how expensive Titanium is. Although again, a well-designed yoyo made in 6061 is going to out-perform a poorly designed Titanium throw.
As far as “are they worth the money?”, thats a very individual thing. I feel that the Anglam is way overpriced, however I’m sure Stickman (who has like 10) would disagree. Similarly, others express concerns about the price of yoyorecreations and CLYW’s, whereas a lot of people are happy to pay the prices asked.
I think it boils down to this: Jensen infamously won Worlds with a $35~ plastic Northstar, and Gentry just won US nationals with the Shutter. Once you get past the $40 mark or so, the difference in performance becomes negligable. There’s a video on youtube of a guy doing a 1 and a half minute throw on a Protostar, which is far more than a lot of people could do on a Dazzler or Anglam.
Pricing is reflective of cost to produce, which is why china-made throws are cheaper (like the Shutter)
7075 is more expensive but doesn’t offer too many benefits.
Titanium is very expensive but a Titanium throw isnt necesserally a good one.
“Are yoyo prices justifyed?” All depends on the opinion of the individual buyer
Once you get past Shutter/Rally/Yeti/Protostar stage, performance differences aren’t all that spectacular.