Actually mate, sorry to disappoint you on prices, my fishing mate at the time was a best mate of Brian Jarret (ex Hinders Bait when in a glorfied shed), so pop ups and glugs at mates rates 😀
Anyway, the pop ups were probably the cheapest avaiable back in day, and glug was probably a Gycerine based 'flavour' who knows?
Deff in those days, nowhere anything like rip of prices now.....
To pre-empt, any replies, YES, they were a 'wonder bait' for me and others at the time,,,, were they 'double or triple or whatever cured' of course not 😂
Believe what you want, it's still the ability I had at the time to be on a venue to study fish movements etc and shared knowledge that caught me a few lovely fish.....
Oh best not mention Chum Mixers before flying rats invaded.... not sure how much that bait cost!!