The six Lions call-ups who played a total of 15 minutes are set to receive more than 15,000 ($27,000) each.
The "Geography Six" - low-profile players from Wales and Scotland - signed contracts during the Six Nations for a pro-rata payment of the 70,000 ($125,000) tour fee.
They flew home from New Zealand on Wednesday night after 10 days with the squad, with only prop Allan Dell and No 10 Finn Russell playing any part in the midweek games.
Warren Gatland brought in the reinforcements for logistical reasons, rather than on merit, because they were already in Australasia with their national teams, so would not suffer from jetlag.
It resulted in strong criticism from former Lions about "devaluing the jersey" and Gatland subsequently revealed he was reluctant to use the reserve players because of the public outcry.