I have been out of the hobby since 2015, and now I'm ready to come back again.
But searching in the livestock classified I found mushrooms, torches, hammer and other corals selling from $100-800, that's way to much for those kind of corals, when I left the hobby you get those from free to $35 for something really rare.
What happened in those years that chea corals are so expensive now?
There's two aspects to it. One is that Indonesia and Fiji banned the export of live corals about 2-1/2 years ago, and shipments of corals and live rock from these locations were easily 90% of the worldwide market. With that much of a reduction in supply, prices were bound to rise.
However, the other aspect of this is that you're looking in the wrong place. There are lots and lots of "ordinary" corals that are no where near as expensive as corals with comic-book names sold by the "live sale" guys.
Here's a few examples on Diver's Den's site. These LPS are from Australia, so they are indeed more expensive than the Indo examples were from a few years ago. But most of the euphyllia are in the $100 - $130 range. If you'd like wild-harvested acropora actual
colonies, then Diver's Den has
quite the selection of these from Tonga and Australia, typically for $80 - $200 depending on size and color.
If you'd prefer aquacultured, then you'll notice that on Pacific East Aquaculture's site,
all of their acropora frags are $20 right at the moment.
One thing you'll notice if you do a some research is that the "live sales" sites have little inventory posted on their actual website, and most of the list prices are very high. If you then read through that same company's live-sale threads on R2R, you'll realize that a great deal of their inventory gets sold for considerably less, albeit in a frenzied, you-have-to-click-fast manner.
The bottom line is that if you'd like nice corals at reasonable prices, you're looking in the wrong place. On-line frag sellers that have lots of comic-book name corals are intended for people that are "coral collectors" that take pride in having the latest "named" coral. It's their hobby and their money, of course, but a lot of us are more interested in creating a reef environment than collecting corals as one might for action figures, tennis shoes, etc...