What does it do?
Introduces a new type of NPC, based on the merchant, that will buy items from players instead of selling them.
How to use
Simply head to your nearest Trader and buy the new "personal buyer contract" and place it as you would a merchant. The name will have a "Buyer_" prefix to distinguish from merchants.
Then right click on the contract and choose "Manage traders". This will bring up a menu like the merchants but with "Manage Price