You are way too late for this. There is a laundry list of things that killed the economy a long time ago. I.E. the implementation of breeding, Yen becoming tradeable causing lucky eggs to lose their value. Also the volume of players has grown substantially since these things were implemented causing an abundance of a lot of what used to be rare and valuable things.
The only thing that will fix the economy at this point is a reset and they say that wont happen.
I personally wouldnt care about a reset as long as our items bought by donating remained in our inventories.
[spoiler]srs, ive spent way too much on cosmetics for them to do it..[/spoiler]