That type of damage is very common & very easily/inexpensively repaired. Buy a replacement lower control arm mount from someplace like Rubicon Express: Jeep Suspension, Lift Kits and other Jeep Parts -RH1
where I bought one & have a welder take care of the swap. Should cost <$100 for the labor, any welding shop would consider that to be a minor job. A 4x4 shop will have someone more than competent enough to swap the mount. Heck I could do that job in my garage in under an hour from start to finish.
That a Jeep dealer wanted $3000 was criminal.
P.S. $45 for a new lower bracket from Rubicon Express, although their website incorrectly says they don't have them any more... they do.