Opening Prismatic Evolutions Pokemon Center Elite Trainer Box (Exclusive) returns about $51.74 in card value against its $410.57 price — roughly $0.13 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Prismatic Evolutions
How expected value is calculated — card value only, from published pull rates and daily market prices.
Prismatic Evolutions Pokemon Center Elite Trainer Box (Exclusive) on TCGplayer