around here you can get a junkyard turbo engine for about 200 plus maybe another 30 or so for a warranty. That wouldnt include the turbo or other items required like the front crossmember or the intake piping. It's the same price whether it's turbo or not since it only includes a "long block" not any of the exhaust parts (they consider the turbocharger part of the exhaust as it bolts onto the exhaust manifold). Check around local u-pull-it yards and see what kind of price you can get from them. Granted this may only be cheaper if you plan on installing it yourself....

good luck.