For example just the crank and forged pistons were $1,000: you might not need or want the hardened crank which was $300. Forged pistons are almost $700. The Killer B oil pan almost $500, windage tray $200, and STI oil cooler almost $300.
I also had the alternator (just bad luck), fuel and oil pump replaced with new, all new hoses, new Group N engine mounts, etc. You could spend much less, or quite a bit more, depending on what you want to do.