how do I get pre-sales questions answered?

Support forum is dedicated to technical questions, all questions regarding licensing & product access should be directed to contact@mdbootstrap.com

where/how do I get pre-sales questions answered? (...) Why don't you have links to a pre-sales resource on your website?

We have a "Contact Sales" link that will contact you with our Sales team directly on our pricing pages: https://mdbootstrap.com/pricing/

We also provide a FAQ https://mdbootstrap.com/docs/jquery/getting-started/faq/

And a licensing page with package contents explained: https://mdbootstrap.com/licensing/#package-contents

with this new "pro" license, what happens to my existing license if I don't upgrade?

As the upgrade page states "Upgrade is optional" - you only have to upgrade if you'd like to receive the new content that in previous licensing was a separate product & in new licening is included in PRO - if you don't upgrade you'll still have access to the old version of your product, you will still get updates & support as long as your license is valid.

why are all the prices posted in euros?

We have USD prices for the US and EUR prices for the rest of the word, if you're located in the US and see EUR prices, please contact contact@mdbootstrap.com

If I do upgrade, and I want to switch libs, what's that entail?

In order to create different versions of MDB we had to develop them from scratch so you'll need to purchase them separately.