http://www.minilab.com/
http://diversifiedimaging.net/photographic-chemicals/ (aka photo finishers supply - the name of their brooklyn, ny branch)

http://www.pdisupply.com/


All three of these photo supply houses can supply you with chemistry and paper at significantly better prices than any of the previously mentioned consumer camera shops. And, more importantly, because they supply commercial labs, they always have fresh stock. Pick the one closest to you and stock up when you place an order so as to make the most of the hazmat ship fee.