Aw, come on! Where's that adventurous spirit?
I think this is entirely doable. I had a similar experience when I was 16... but just the nut came off in my case (that's why I asked my original question.) I pulled off the first fret, used a utility knife to carefully cut down through the fretboard in the fret slot, down to the neck (the guy in the article used a dremel tool for this task.) I didn't know about steaming back then so I just chiseled that section off . I then made the repair and glued the fretboard section back on. I even lucked out being able to reuse the fret!
If I were to do this now with what I've learned here, I'd be sure to use masking tape (which I didn't back then) to protect what surfaces I could and use steam:
http://www.projectguitar.com/tut/prremoval.htm
If you haven't already, peruse the main PG site's other tutorials. You might find other info that might be salient to this project.
As for cost for a "pro" to do... hmm, it might be pretty expensive compared to the value of the guitar. If you love this guitar and it has great sentimental value, then go for it! But from my searching around for "ESP EX-250" they seem to be discontinued and have been sold in clearance for $160.99. For the price of a pro repair, you can probably buy a whole new neck. You might want to do this to get the guitar up and playable, then try the above repair yourself on the ESP neck at your leisure (you can re-use the new neck for a later project.) I don't know... just some thoughts .
You know, last thought, if the guitar is still playable as is, you might want to just leave it alone!