Opening Celebrations Pokemon Center Elite Trainer Box (Exclusive) returns about $183.84 in card value against its $529.46 price — roughly $0.35 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Celebrations
How expected value is calculated — card value only, from published pull rates and daily market prices.
Celebrations Pokemon Center Elite Trainer Box (Exclusive) on TCGplayer