@randowhale just announced that from now on, an upvote will only cost 1 SBD - down from 2 SBD's + the minimum voting power will increase from 1.5% to 2.5%. See official announcement her: 

https://steemit.com/steemit/@randowhale/randowhale-is-now-only-1-steem-sbd-per-vote-spread-the-news