I've noticed that all the gems in the item market are super
expensive, and it's kind of annoying, because they're all above
their recommended price that's given. Maybe I sound a bit like a
child, but I don't really feel like that's fair. Could somebody
explain it to me?
Because Gems are mostly used for making Shiny Hunts easier (getting
Eggs from Gem Collector) and generally getting the legendary bird
trio eggs (which require a large amount of gems for a single egg).
That's why people buy the properly prized Gems, and only the
expensive ones are left.
Best method is to set up a filter on your item market, so you get
notifications when your desired Gems are up for a reasonable prize