Average Cantina Shards daily?

Depends on the levels you farm, the higher levels give slightly more cantina credits.
The rest is just math: 2 refills = 240 energy and energy from the daily timer = 120
Stage 1-2 battles: 45 battles * 13= 585 credits
Stage 3-4 battles: 36 battles * 17= 612 credits
Stage 5-6 battles: 30 battles * 21= 630 credits

I get 1 refills daily and I would say about 7-10? It used to be more when I was farming Luke. For whatever reason, my GS drop rate is awful.

I'm getting rubbish drop rate on GS but really good on Dooku hard node, swings and roundabouts