Cash, Eridium and DLC currencies
Convert surplus loot to cash at the Snowflake train
Turn an otherwise unwanted chest haul into cash while keeping worthwhile gear from the same run.
Loot Train after Tinder Snowflake in Frost Bottom, How Marcus Saved Mercenary Day.
Repeat by defeating Tinder Snowflake and opening the train again; save-quit and return to reset the encounter. Cash depends on which items you sell.
Stop when you have the cash you need or the haul no longer offsets the time spent; keep any remaining useful upgrades.
Open a guide to find other locations and see what the item is used for.
Turn an otherwise unwanted chest haul into cash while keeping worthwhile gear from the same run.