US magazine Ads:

LPs:
Let There Be Rock: $23
If You Want Blood: $17
Back In Black: $8
For Those About To Rock: $8
Flick of the Switch: $6
       

LPs: $4.50 each
         

Ads using AC/DC: $3.50  each
   

Ads using AC/DC: $1 each.
 

UK magazine Ads:

Ads (HUGE; size of 4-page posters):
Back In Black UK: $14
Nervous Shakedown/Monsters of Rock: $8

Sounds 1976 (1/2 page, size of US full page, MINT): $12

LP/Single: $6 each
   

Various: $4.50 each