Opening Shrouded Fable 3 Pack Blister [Pecharunt] returns about $16.28 in card value against its $34.67 price — roughly $0.47 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Shrouded Fable
How expected value is calculated — card value only, from published pull rates and daily market prices.