It's not a blocker to trying but I equate "enterprise" with $expensive so it does certainly put me off, as I'd need to enter into negotiations that I don't really have time for in order to comply with our policies. I also find often when I begin this conversation there is a set price that is inflexible and a minimum spend way in excess of what we need, and I usually end up just looking at another product.

I appreciate you have technical limitations at present but consider adding a SSO administration UI to your backlog - you can certainly set it up so it's all managed in the software. It is a bit more of a technical problem when it goes wrong, so that justifies an increased price tag for the support. I don't expect anything for free but I don't want to have to talk to someone to get it.