Opening Legends of Galar Tin + Galar Partners Tin 2-pack [Zamazenta V/Inteleon V] (Retail Exclusive) returns about $12.12 in card value against its $179.99 price — roughly $0.07 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Sword & Shield Base Set
How expected value is calculated — card value only, from published pull rates and daily market prices.