You have to go look. You can get online and see prices and you can also check to see if your vehicle is in the yard
About 180 but they run specials and you can get them as low as 50-80$. The inventory changes daily and you can tell them what kind of car your looking for parts for and they will call/email you when the get one in. For a motor it's best to find a wrecked car at least then you know it was running when it came in. Also check around online and find out what other years and models of cars motors will interchange with your car. 3800s are pretty common amongst the GM line.
Usually motors go for about 200-220 plus core last I checked but I'd suggest hitting their website first.
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