Here's why:
* No such comic exists: There was no "Super Team Family" comic book published by DC in 1975. This means your question is about a fictional comic.
* Hypothetical value: Even if such a comic existed, its value would be based on numerous factors, including:
* Rarity: How many copies were printed?
* Condition: How well preserved is the comic?
* Content: Who were the characters featured, and what was the storyline?
* Artist and Writer: Who created the art and story?
* Demand: How popular is the comic among collectors?
To get an accurate estimate, you would need to:
1. Define the comic: Specify the characters, storyline, artists, and any other relevant details for this fictional comic.
2. Research similar comics: Look at the market value of comparable comics from that era, taking into account the factors mentioned above.
3. Consult with comic experts: Reach out to experienced comic book dealers or appraisers for their professional opinion.
Remember, the value of any comic is subjective and can fluctuate based on market conditions.