9k seems totally reasonable imo. You can easily make 5-10k potatoes doing one day of dailies in a single town. And we have a month to earn the money. Just do your Louise Hill dailies for a week and you can afford the entire set easily.
I understand that there are casual players who never ever quest who can't afford this, but so what? If you don't play, you can't afford the fancy stuff. That's how games work. For the players who do actually quest or make money other ways, it's important for us to have stuff to spend out potatoes on. I have 200k potatoes rotting in my vault, and I'm not even questing every day! I haven't sold any pets or anything yet! I'm sure there's already people who've hit a mil or more.
It's important that DV tries to pull those excess potatoes out of the economy and balance prices, especially at this early stage. No one wants to see the site economy turn out like Neo or Gaia.