If you are a crafter then Obviously u wont like this idea. You make money of the Monopoly u hold on pet prices. Doesnt change that monopolies are bad for the economy.
Who says the prices are gunna be unreasonable? 13,500 gil-15000 gil for 99 universal tools seems like a decent deal to me. Its definately better than 30,000- 50,000 gil for 12 pet cookies.