You looking for new or used? Seen some kick *** deals on Craigslist....Ebay is another. The various For Sale sections of boards like JF are another source. I have primarily used Craigslist for stuff and have had success. Might take a while, and you have to watch it constantly and diligently in order to find the deals and be first in line....
If you buy from CL, be smart and use common sense when spending your cash...lotsa freaks out there!!
An educated, armed populace cannot be enslaved.