Found another one.

Drinks (#333) purchased 36 Bushels for $9396.
Some of these goods were purchased for a better price on the private market of Drinks (#333).
Drinks (#334) purchased 36 Bushels for $9396.
Some of these goods were purchased for a better price on the private market of Drinks (#334).
Drinks (#335) purchased 36 Bushels for $11,124.
Some of these goods were purchased for a better price on the private market of Drinks (#335).
Drinks (#336) purchased 36 Bushels for $10,764.
Some of these goods were purchased for a better price on the private market of Drinks (#336).

I accidently typed max purchase price as 30m and quantity as 36.

But there were bushels on sale for $36 on the public. So shouldnt it have purchased them from the public for $36 still.