Nope. This was a question I wanted to rise myself, you were faster. Did test it for longer period. The sold items do not benefit anything in the npc world. Militia don’t use them, they keep using the things the shop spawned itself. The settlements don’t get richer. Quests do not change. Economy is not influenced. They stay in the shop for few days then just despawn.
Hope it is just temporary thing and later on it will have effects.
