Opening Pitch Black Premium Checklane Blister [Luxray Line] returns about $2.94 in card value against its $18.14 price — roughly $0.16 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Pitch Black
How expected value is calculated — card value only, from published pull rates and daily market prices.
Pitch Black Premium Checklane Blister [Luxray Line] on TCGplayer