The new buff "A Handful of Ballons" from Balloon Market supposed to give +500% production speed on Provision House and Rarity Provision House. When applied on Rarity the production of Manuscript is 1h and 52 min which is exactly the same when applied with Barazek (+300%).
So in both cases it takes the same amount of time to produce 1 Manuscript.
Is this another bug or am I missing something here?