>The page doesn't seem to imply that the price for 25+ users would scale linearly; for that they have a "Contact Us" call to action for negotiating pricing.

I confirm that! It is just a specific offering for a small project where 25 people team use our editor. It's a fair price (covers granting the commercial license, the right to use / change / hide our code, enterprise support, maintenance, warranties, indemnifications, etc). For bigger projects we always try to implement a licensing scenario that works well for a given customer. Contact us and we will do our best to craft you an optimal plan.

It might be worthwhile putting some bracketing or aspirational pricing up there with it too then as you’re potentially scaring away potential commercial clients who look at that price and can’t see how they could justify its inclusion at a prices they would have to guess at using that as a base.