Midwest is the OEM maker for some of the Kioti implements. From what I can tell, they offer, via Kioti, the BB15-48 Sub-CUT box blade for the smaller tractors, they also seem to offer some of the BB20 series standard duty box blades. They are also offering their Heavy Duty 30 series box blades, which is the blade you got the price qoute for.
Midwest also make some of the landscape rakes for Kioti as well as back blades and possibly some other things. If you don't see exactly what you want from Kioti (size, features), realize that Midwest makes a wider product line and you might be able to find the item you want from a Kioti dealer (or any Midwest dealer) under the Midwest brand.
I think Midwest is a great brand, made right here in the USA, which is very rare! There stuff is on the high quality end of the spectrum and features & designs are good to very good. Their price is also typically very reasonable given the level of quality you get. I have no idea if Kioti is marking up their products over what you can get a Midwest branded item, however I suspect they would not be able to do that, nor would they really want to do that in a competitive marketplace.
Midwest makes their implements available in several colors including Blue, Green, Orange and Grey. Maybe red too?
As for the price quote, I checked Tarheel Tractor's Ebay store just to see. If you can live with a 72" blade instead of an 84" blade you could save about 50% by buying from them (but that does not include shipping costs that would likely be about $175-$200). Still, with shipping, their price would be about $400+ less than your quote. So your Kioti dealer sounds like he is priced pretty high.
Tarheel Tractor's BB30-72 Ask for Brandon, he is a great guy to deal with. By the way, just because the item is not listed on his Ebay store does not mean it is not in stock, so you may find a similar savings on an 84" box blade from him.
