What could you buy for a pound in the 70s?

$1 in 1970 is worth approx $5.40 in today's dollars adjusting for inflation. For food and barbie dolls under which this questions is being asked, most food costs are roughly the same except for specific commodities like cocoa, high fructose corn syrup and similar goods used in confectionery and prepared foods as demand has not risen or fallen at the same rate as inflation. Toys are manufactured in low wage paying countries today like China, and are relatively cheaper for consumers than in 1970

$1 could but two dozen eggs in 1970, today, $5.40 will buy 2-3 depending on where you live.

$1 would not have been enough to purchase a Barbie from a toy store, but $5.40 will buy a cheap knock off today.