Opening Sun & Moon Base Set 3 Pack Blister [Togedemaru] returns about $10.38 in card value against its $121.99 price — roughly $0.09 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in SM Base Set
How expected value is calculated — card value only, from published pull rates and daily market prices.
Sun & Moon Base Set 3 Pack Blister [Togedemaru] on TCGplayer