Thank you for your interest in Adobe Stock.
We don't currently have custom memberships. With the 10 images per month/750 images per month plans there is an overage option where additional images can be purchased - see Adobe Stock - high quality royalty free stock photos and vectors | Adobe Stock
That is unfortunate. I manage a CC membership for a team of four and would prefer to use Adobe Stock for the convenience, but our needs do not fit the only two plans Adobe Stock is offering (10 or 750 per month - not shared). I will need to select another provider unless Adobe can add some additional plan options.
Thanks for your feedback.
If the Adobe Stock plan options do not fit your needs you may wish to contact Fotolia - Royalty-Free Stock Photos, Vector Art & Video - Fotolia - please add a note to say you were referred by Adobe Stock.