It's not the ship in port, it's the present supply.
The price drops after they use up the higher price supply, if Caribena lost 60k (they probably didn't lose 60k but their net may be down 60K, big difference), it wasn't on fuel sales, probably got into a Nigerian scam.
Avgas is still around $14.00 a gal due to the fact that it's off of a higher priced load. Next shipment will give some relief.