I am looking for a aqua c EV240, euroreef RS250, or asm G4 or G4X for under $300.00, if you have one let me know price a I will be very interested in buying.
You may also want to consider an Octopus recirculating skimmer. Fairly inexpensive. The 3000 model is rated at 400g, although the largest tank that I know anyone using one on is a 260g, and they say they are getting good results.
Can't get you a G4 or 4X for that cheap, but Noel at Oceans Aquariums has perhaps the best prices anywhere on them: http://www.oceansaquariums.com/
Just tell him BoomerD sent you. He usually only does business locally, but will ship (at your expense) to people I send him.