http://kotaku.com/how-much-does-it-cost-to-make-a-big-video-game-1501413649 the price look almost "random" but MMO tend to cost a lot ( i suspect for the massive investment in the server hardware needed at the start of the game but not only for swtor was also the complete voice over etc etc). How much a future EC player think is the development price tag of EC? i suspect it will be similar to planetside 2 or defiance, must also consider EC is a licensed product.
Look at AAA kickstarters games: that's the real cost, without the marketing & publishers. EDIT: - 2 things makes costs incredible high: licensees (look, at matrix, star wars, tlotr) and being a mm game. (all the server logistic is apparently not cheap) - The min should be of 30 millions taking on mind Dark Millenium, but I suspect a lot more: at least 80 millions (I can live at least 16000 lifes with that money xD)