On eBay germany, they are the good versions and legits I confirm.
I am also thinking like you about the one you shown in this thread, it is an early prototype version (Also, the title of the Mini is in english, not in Spanish).
I recently got a 1985 German catalog and an He-Man/Skeletor w/Cassette Giftset is also shown, and as you can see it is a prototype version because the Mini comics inside bubbles are "8_back" ones.
Out of that, many versions of this Starburst Giftset are existing:
(So, if you are looking on the Mini of this one, it is the "Story of She-Ra" but not in english)
The Spanish version was coming with the regular She-Ra and was very different (as the He-Man/Skeletor w/Cassette was also very different in Spain):
The Starburst is not existing in Spanish version (never sold in Spain, only the first wave of toys).