I value gold chests as 535 shards cause I value the shards given by duplicates. My argument about why I do this is that there are 150 (3 = 450)different commons and 108 (3 = 324) different rares.
With this high number, the personal value should be the worst case scenario which I would denominate the duplicates value, cause this still assumes you are going to get some that you want but others that you dont want at all which could give you 3 rolls without duplicate shards.
This is how I value capsules and chests: (WRONG DIDNT COUNT UPGRADING, below is updated with upgrades)
Blue capsule 175 shards
Epic capsule 500 shards
Legendary capsule 1525 shards
Wild capsule 1000 shards
Chests (exp value from weekly, not enough information for region specific)
Bronce (value 0 exp) 50 + 80* = 130* shards
Silver (1k exp) 125 + 200* = 325* shards
Gold (1.5k) 175 + 360* = 535* shards
Plat (2k) 3...