How much i sell my used honda civic vtec engine for?

i have a 2002 honda civic vtec engine with about 100,000 miles on it and i would like to sell it on craigslist or something, but i have no idea how much this is worth. any ideas?How much i sell my used honda civic vtec engine for?go on blue book and get the price. Or call a used store and find out how much they sell them for. Then go 200 or 300 lower. Good Luck