It cost me about $4000 total to get a Jasper rebuilt 1.9L engine put
into my 1995 Escort about 3 years ago.  Worth it too.  I expect a
larger engine like yours to cost slightly less (for some reason it
always works that way).

Figure the price of the engine off of Jasper's website.
+ ~1000 labor
+ ~250-~300 for other parts not included with engine (all new belts,
hoses, filters, radiator cap, etc).
+ ?? fluids
+ towing (if applicable)
+ sales tax and nusiane fees

If you are planning on keeping your car for a long time why not?  New
cars are so hideously expensive it was a no brainer for me (and there
aren't any new 2DR hatchback cars that I like for me to buy anyway).