I don't know what they charge by you, but around here they are $350...for a 30 gallon tank a couple baffels and a mediocer skimmer...
For $50 you could build that tank and $300 would buy a heck of a skimmer...Either way you still have to buy the overflow and return pump...
If they were around $200 they "might" be worth it to some one that wanted "plug and play" or if they were not handy enough to squeeze a tube of silicone...
Don't get me wrong...it's not a "bad" design...it's just way overpriced...
Not like EuroReef expencive (you pay a lot, but you get a lot in return)...They just want too much cash for a plastic box...