Wendy, The Good Little Witch #75 (October 1972) 15c Variant

I had a few Harveys from around that vintage when I was a kid, all bought in Australia. I tired of them pretty quickly and they are long gone, but I now wonder which price variants they were. I know I wouldn't have been paying 20c for Wendy or Casper when Uncle Scrooge or WDC could be had for 15c!