At our school (141) its about 4,000 for the CFI. Includes about 20 hours of flight (half arrow, half archer) and some time in a 152 demonstrating spins!

CFII is $2200 and MEI is $4400 although you it assumes you have about 8 hours PIC ME time so you may need to buy extra time.

We actually have a really nifty course that combines the CFII and MEI into one course. Its $7500 but you get 25 hours of ME time. The really cool part is its only 1 checkride/oral. When you're done you get your II and MEI.