Stock images

I do not, and I would suppose a community expert would know the cost of a student license is a lot cheaper

By @SecQube

There is no need to get snappy! I won't argue with you, but details of what you posted here do not match the comon plans available. I do no know your region, nor the currency. This is what I get, when looking at the student prices for Creative Cloud, which is very near to your number. Given that there are regional differences because of taxes (VAT), your numbers could match. 

A 10 assets/month stock plan can only add up to 120 unused credits (a year of stock). And it costs around 30€ a month.

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Ignoring the price issue, you may have a Teams or Enterprise plan. If that is the case, talking to your internal plan administrator could be of help. If you have an individual subscription, contact support for any help as indicated by @EvilBug1 . (EB is an Adobe employee, so you can share private account information via direct message. Do not share private information, like e-mails here).

Adobe customer care can be contacted by beginning a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen. Pop-up blockers need to be disabled, you need to accept cookies! If the chat window fails to open, or is non-responsive, use a different device and/or browser to start the interaction.

For support via Twitter:
https://twitter.com/AdobeCare

(see also here: https://community.adobe.com/t5/creative-cloud-services/how-to-contact-adobe-support/td-p/11875703 or here
https://community.adobe.com/t5/account-payment-plan/how-to-contact-adobe-support/td-p/11843852)

Important: Adobe does NOT contact you unsolicited by e-mail or direct message. If you get contacted by direct message from a person, claiming to be an Adobe employee, look at that profile and look, if they bear the “Adobe Employee” marking under their name. Adobe support does not use Skype to give you support.
If in doubt, ask the forum.