creamy fear is 500k-1m imho
+3 sprint mail should be (assuming +0 unenchanted is 3.5m) about 28m, but it might be a buyer's market (users of sprint mail seem to be somewhat limited so demand would probably be low) so perhaps it will be somewhat lower than that
+10 mes [3] at 180k each +0 should theoretically fetch 180k*0.8*(100/0.0384) or about 375m... but srsly i really don't think it's worth that much, plus the fact that it's a buyer's market (we see people lapping up +0s, but who'd want to pay over 40m for a +10 mes, srsly), so don't get your hopes up if you're selling... ppl seem to be more than willing to make their own too...
+7 thorny shield[1] should be about (at 3.5m for each +0) 28m. But it could be a seller's market, so one could expect 10-20% more than that.
again, for the last 3 items, auctioning them could probably prove disappointing if you don't gauge the market's demand at the time
-w-