http://www.hulanbio.com/can-i-be-good-at-physics/
When you mine ore, reprocess ore or salvage, and have parts provide you are available them for the NPC market, or many put them for sale to other players. This works similar to an online auction marketplace minus the fees. Essentially you check out a station, position the item up for sale, and leave the item at that station. It is sell immediately unless it is a hot product, just like real day-to-day. When it's purchased the money enters into your player's bank account and purchaser comes to the station and picks the item up. Productivi