It's pretty straight forward to drop the oil pan. I do believe the two bolts at the front will have to come off with a wrench as they're located over the edge of the subframe rail.
I'd hazard a guess that if you're paying someone to do this you're looking at a minimum of $2500-3000 for a rebuild including labor and parts. Doing it yourself it can be done for $1000 including various machine shop work.
You can sell the car as is, but plan on taking a $3-4K hit on it. PM Bnoon if you're looking to get rid of it as I know he's looking for a contique needing engine work so he might be able to help you out.
Rick