I'm sure the details for the Mastnode is already out. And at the moment, running a Masternode is not profitable, yet.
There are 1440 blocks a day of 2,5 dstra = 3600 dstra a day. MN claim 10% of this, 360. Currently there are 10 MN online (only 8 seems to be working), so each receive average about 36 dstra day. In order to match this you need to stake 15 times a day.
I do not have another 30k to stake for make the test, but do 30k dstra stake 15 times a Day?