Opening Pitch Black Pokemon Center Elite Trainer Box (Exclusive) returns about $26.42 in card value against its $116.08 price — roughly $0.23 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 Pokemon Center Elite Trainer Box (Exclusive) on TCGplayer