Well if you're ordering corals in addition to everything else then yeah 400 dollars is no problem. But considering ORA only offers clowns, pseudochromis, gobies, and a few blennies, and the same ones. How much of the same stock can you sell over and over again. You start to saturate the local market.
I also have been in charge of ordering wholesale orders from ORA, and after a couple of orders we just don't sell many neon dottybacks anymore.
Of course the clowns are a constant. I guess you can order 60 clowns of different assortments every couple of weeks pretty easy. In our store it might take us a month to sell them all....maybe a little more depending.