We've all heard players telling their GM that "I'm collecting the arrows" after they slaughter hapless villains. The assumption is that arrows are still good to go. Really? I present a thought provoking video about modern experiments in archery.
https://youtu.be/DBxdTkddHaE
So. The conclusions are that chainmail isn't that protective against archery. A well designed metal plate armour can be very protective, but still transmits the shock of the impact. An external Jupon, or padded layer, will help mitigate the impact by a certain margin. And the heavy longbow pull does not allow the lightning quick fusilade of fantasy films. Food for thought. Let's hear yours....
I think collecting arrows is fine. Maybe lose 20% for broken, bent or just cannot find. If there is a good reason (you shot a stone golem!) then make sure the archer knows the arrows broke when they hit and cannot be recovered.