and that aqua ace is roughly around 180€.
For sailfish device with snapdragon 600 they said it would cost around 15K rupee and that is some 25€ more. Of course, this is unofficial since the phone isn't out yet (if that even happens) but IMO not that much more.
Sure, from android benchmarking data MTK is better but sailfish is not android and benchmarks does not tell everything. I would gladly pay 25€ more for qualcomm.