I would say half of book is about right on most vehicles but Jeeps aren't most vehicles. It's not uncommon around here for them to go at normal used rates. The important things is to find out why it was totaled. Some rebuilt titles are previous thefts that insurance companies wrote off before they were recovered by the police. I would ask to see the previous damage or cause for the title being rebuilt. Then decide whether you think the deal suits you based on other used prices.