Seriously, your A-B distributor could not get you a NEMA 3R enclosed 200HP drive in a couple of weeks? A-B has what are called Local Solution Centers all around the country that are in essence, internal VFD panel shops just for this purpose. I know the Denver LSC has a standardized NEMA 3R vented drive package system because they get a lot of sales for them in that area, and any distributor from around the country can request having one built there to meet fast delivery requirements. Most likely your local A-B distributor did not ask, or his VFD specialist is unaware of the thing Denver has going on. We have used them on numerous occasions, it's a nice package.
Price wise though, Sq. D can be dirt cheap, but you get what you pay for...