Thanks for bringing this to my attention,
@Keels - hopefully I can help.
We've done buffet (in which you get one kosher meal, but also have access to the buffet) and a la carte meals. For the buffets, you pay the regular buffet price. For the a la carte, you pay based on what you get, but it should be the same price at any restaurant.
Based on what I remember, the entrees are about $20-$25 each. I don't know the prices for appetizers or desserts, since we rarely get those, but I'm guessing they're cheaper than the entrees. How much cheaper I don't know.
(The quick service kosher food, if you're planning to do any of that, is about $8-$10 per entree last I checked).
The food is nothing to write home about, but it's decent. If you take into account the fact that it's Disney and the general price of kosher food, I'd say you get close to what you pay for. It's not going to be the best meal you've ever had, but if you're interested in a sit down meal, I'd say it's worth it.
As
@wilkeliza mentioned above, the kosher meals come from Weberman's. As of my last visit, they were OU certified. They bring the food out to you double wrapped, and it comes with silverware (also wrapped). If you have any questions about the kosher food, you can always ask to speak to a chef.
I hope this helps!