I don't think we can give a fixed price quote on that. I've looked at it, Rob has looked at it, and it isn't an issue with Fabrik, it's with how MCE (and JCE) works, and the way it generates random ID's for the DOM elements it creates on the fly.
It may be possible to work round, but neither Rob nor I can immediately see an obvious way of doing it. Which means we'd just have to start working on it, try out a variety of strategies, and see if we can work round the way way MCE does things. If it was something we could easily fix, and was down to Fabrik itself, it would have been fixed by now.
So all I can do is say it'll take at least a couple of hours, to get an idea of whether it's even fixable. We've already spent an hour or so, without a clear idea. Then it'll either be 5 minutes, or 5 days, to implement and test a fix, I just have absolutely no way of knowing.
I'm sorry, but when integrating the behavior of two other large projects (J! and MCE), sometimes we hit intractable issues.
-- hugh