How does container pricing fluctuate?

Geographic location: Generally speaking, the prices of shipping containers are lower in big ports like Newark, Long Beach and Houston while the prices in inland locations are higher.
Local import and export fluctuations over time causing shipping containers at times to be all used for exports while at other times there are more imports than exports and there is abundance of shipping containers.
Geopolitical events like shipping lines avoiding the Red Sea or drought of the Panama Canal which causes inefficiencies in usage of the global container fleet.
Changing alliances among shipping lines who share container fleets which can cause inefficiencies and less availability of used shipping containers.
And many more factors like shifts in global trade volumes.

Used Shipping Container prices are influenced by geographic location, import and export fluctuations, geopolitical events and alliances amount shipping lines.