no. they will give you 'fair market' value. i printed out many adds for vehicles like ours, all over the web. ranged from 8 to 10k depending on location, little higher in quebec for some reason...
TJ's have a pretty good resale and part out price so should do OK. if it's modded then can buy it back and part it out if buy price isn't much... ie more work than money made etc.
also helps it will be his insurance company paying out not yours, less trouble (unless they are the same company). can also look up on google about unsatisfactory offers and arbitration or whatever they call it. so you can go in prepared.
when they call, take notes of what they offer and buyback etc. then say thanks, i will contact you. take some time to think about it with no pressure.