I was made aware of these just before the weekend & was going to post a warning up myself soon as I got back, but been away for several days, yes 100 woolworths that stocked these hence the nick name woolies 8 packs.
One thing to note is the one shown in the OP which is supposed to be real is also a fake, from what I know to date woolworths 8 packs were never heat sealed, I could be wrong, but I have spoken with several collectors about it as well as the grading company & not one person who bought them back in the day ever remembers seeing any that have been heat sealed.
There are apparently 2 different bag sizes as well & also single & double taped versions, personal I can only 100% vouch for the larger of the 2 bag sizes with a single tape seal, so there "could be" others out there in question as remember billy boy faked these.
I have 2 sealed ones which are genuine, both are large with single seal, I also have 4 empty bags , all being the same large size with clear residue of a singe seal.
Very worrying
i will post a few more thoughts later when I have the time guys