That makes perfect sense...but I
personally think that these armors mean more to the heritage and culture of Vvardenfell like Imperial Dragon armor is to Cyrodiil. Armors like orcish, dwarven have become norms in the elderscrolls games -- plus there are dwemer ruins scattered throughout Tamriel, the most densely populated being Vvardenfell. So they could be fetched within the province. Why we did not see any in Cyrodiil is beyond me. Perhaps we'll see some in Skyrim.
I understand where your coming from, i think that way about the Ordinator armour, but i always saw Bonemold armour as being the Dunmer equivalent of say, steel in other provinces, that is not all that rare/meaningful just a good staple for their guards and great houses, which each house made varients of, but thats was just my take on it :shrug:
Still maybe there could be only a few suits on some of the Dunmer refugees, and not for sale at all.
And it was disapointing not to see any dwemer ruins in cyrodiil, kind of disheartening that bethesda didnt go to the trouble of being consistent with their own lore, hopefully we will see one or two in Skyrim.