Hello, I plan to sell products on a multi-industry auction site (here: markers). I have a database of photos taken in my studio, but I would like to add a few additional frames directed from the Adobe Stock database. Does a base license allow such use?
You need to read the licence terms. From your description I have absolutly no idea in what use case you fall.
Look here for more information on licensing: https://community.adobe.com/t5/stock/links-for-licensing-terms/td-p/11366788
(Disclaimer: As always with licensing, this is my interpretation of the rules. I think they are correct and advice is based on reading and interpreting the licence terms and on fair use for both the buyer and the artist/stock company, but I cannot rule out that my interpretation is wrong. I'm not an Adobe employee).