Rear axle leak on 2001 Jeep Grand Cherokee

I have been told I have a rear axle leak and that it is common in this vehicle. The fluid supposedly has saturated the "brake lines" I think they said. I was quoted $982 to fix it. I maybe towing a camper in a few weeks and I want to know what the safety issues are if it is not fixed before then and is this a fair price. Really don't want to sink this kind of money into this vehicle at this time! How safe is it to drive this vehicle in its current condition?

1 answer
Sounds high to me! However I don't know the extent of what exactly needs to be done either!!