Why did the quantum tube factory have no quantum tubes?

[Stretchytall]

A quantum tube factor seemed on the map to be selling quantum tubes for 300 Cr each. But when I got there, there were no quantum tubes available for sale. Why would a QT factory not have quantum tubes to sell?

[RalphRoberts]

The invisible hand of the free market strikes again?

[Veter]

Maybe other trader buy all, maybe there too many traders and they reserved all goods on station, maybe that station just dont have resources and cannot produce, or maybe you just in time when production cycle not ended, OR some nice girl hack station and stole all goods by using tiny barbarossa?
Too many maybe, and no answers.

[Venerable_Sin]

If you were piloting the ship then you did not get to the factory fast enough before another pilot bought up all the goods. Remember to check the quantity of goods for sale as the more inventory a station has of a ware, the cheaper that ware. Reputation with the faction is also a price/profit modifier

tip: If you employ a pilot, you can reserve the ware purchased. The station will hold the ware until your pilot docks. I suspect that you are flying your ship and an NPC pilot did this to you, only they bought out the station.