thats alot of money for what is essentially a clear plastic/glass box. a 20 or 29 gallon aquarium in your stand would work quite well as a sump/refugium, and a mag 9 pump can be had for around 50-90 bucks online at various pet sites. This site sells an asm g1 or a g1x, either of which would work VERY well for a 55gallon reef, for around 210 bucks for the g1x. so, about 50 bucks (guess) for the aquarium sump, another 50-90 for the pump, and 210 for an awesome skimmer, grand total 310-350 bucks. Thats a good 390 bucks leftover for you to spend on lighting (if you need it) or livestock.