Well, that's a better answer than I expected! I really expected it to be just barracks...
Cool! Well, I may finally give in, remove my head from the sand and realise that they're really not going to give the useless Greeks any buff, ever, however long I bide my time, since it's a major part of their business strategy...
I've been adamantly Greek from the start but 45 mins and a 5% rebate really is a joke in IA when my average upgrade takes a week or more and one raid can bring in enough to cover the rebate...