In the 1970s Comic Book Shops were few and far between, instead, we of the bell bottom and polyester shirt crowd rode our banana bikes to our local 7-11 to get our comics fill.   In the days when comic books were 20-25c cover price you probably had a few cents left to spend so 7-11 lured you over to their Slurpee ™ dispenser where you could choose from a variety of the cups being offered that week.    This was important for a number of reasons, first 7-11 made a profit on the frozen sugar drink and it ensured repeat business because you’d come back the following week to get whatever the new cup was because, as you know, you had to COLLECT ‘EM ALL!

The distribution of these cups depending a lot on your region; Some 7-11’s issued only one cup per week, while others offered a choice of several different cups.  Both DC and Marvel entered the licensing deal and cups were made from both sets of company characters.