The more you buy, the more they sell: traders and availability

[DNK]

A simple idea, but if a trader comes buy and you buy them out of X, they should come with 2X next time. Reason being, you are building up a trading relationship with them, and as your needs grew, they would naturally want to supply you with more and more (that's their business after all).

Basically, for any given trader, they should remember past purchases and that should alter the amount they bring in the future.

[hector212121]

Perhaps this should be merged with my thread? XD