Trading UI! Dynamic prices adjust based on your sell/buys. Station & Region specific prices.
Simply approach a station, come to a stop and touch Trade icon to initiate Dock/Trade.
Drag & Drop trading/cargo system.
Fill up and fly to a station where your goods fetch the best prices and profit!!
When I was testing it, I tried to use some examples on the tutorial here with Arrays but it consumed a lot of CPU grunt so I started from scratch with my own implementation. The trade system I came up with has no Array usage, just lean mean variables.
With the game running (all the ships flying around and AI patrols) and the trade UI being used, the game ran at 60 fps on my older tablet! o_O