Opening Astral Radiance Premium Checklane Blister [Steelix] returns about $5.19 in card value against its $26.02 price — roughly $0.20 back per dollar spent. On current prices, you lose money on average by opening it.
See every card and pull rate in Astral Radiance
How expected value is calculated — card value only, from published pull rates and daily market prices.
Astral Radiance Premium Checklane Blister [Steelix] on TCGplayer