www.reefs.org
watch that board's buy/sell like a HAWK.. i found a 200gallon on there for 600.00 (acrylic the works! even lights and heaters)
I also bought a oceanic reef ready (overflows) 180gallon, glass lids, 65gallon acrylic sump, tank stand, and some other misc stuff, 400.00 done deal..
Thats your ultimate best bet, also found my ro/di on reefs.org for 80 shipped (kent HI-S 60gpd) only 4 months old.