Heh. While using my Dragon Magazine Archive to look up a quote by Gary Gygax, I stumbled upon an old TSR price list. 
I then plugged in a few values to an Inflation Calculator
D&D (original) - $10 then (1976), $34.33 now
Greyhawk, supplement 1 - $5 then (1976), $17.17 now
G1: Steading of the Hill Giant Chief (8 pages!) - $4.49 then (1978), $13.68 now.
also, G2: Glacial Rift of the Frost Giant Jarl
G3: Hall of the Fire Giant King - $4.98 then (1978), $15.16 now
B1: In Search of the Unknown - $5.49 then (1979), $15.55 now
also, S1: Tomb of Horrors
The Dragon magazine - $2 then (1979), $5.66 now
Cheers!
I then plugged in a few values to an Inflation Calculator
D&D (original) - $10 then (1976), $34.33 now
Greyhawk, supplement 1 - $5 then (1976), $17.17 now
G1: Steading of the Hill Giant Chief (8 pages!) - $4.49 then (1978), $13.68 now.
also, G2: Glacial Rift of the Frost Giant Jarl
G3: Hall of the Fire Giant King - $4.98 then (1978), $15.16 now
B1: In Search of the Unknown - $5.49 then (1979), $15.55 now
also, S1: Tomb of Horrors
The Dragon magazine - $2 then (1979), $5.66 now
Cheers!


