Is that cheap or expensive? I value my health so I have no idea because I'd never put that poison in my body.
Apparently about par. The Wikipedia article says the Whopper debuted at $0.37 in 1957, or about $4.36 in February 2026 dollars (can't calculate for March yet). Article also says all "artificial preservatives, colors, and flavors" were to be removed as of the end of 2020. Still 43% of your daily sodium in one fell whop, though.