Shit, really? Why would they not keep adding raid weapons to the Ori Shop? I mean, Epic Quests are like a year away...For Tiamat, I meant that if you got yourself 4 copies, you'd need to buy one from the Eidolon Orb Shop - and you'd never reach three MLB copies then. So really, all you did was change paying less Orbs for two.
And farming for some Orbs is just not worth it. Three MLB Tiamats would be worth it, though.