This caused major concern and protest among customers (What linden labs calls “residents”, to hide the fact that those people are the ones that pay for the grid), mainly because the increase is seriously hefty (66%), yes, TWO-THIRDS, which will cause lots of private estates to disappear.
One of them might be the USS-SC area, a cluster of roughly guessed 130 sims mainly used for sailing.

To protest against the price raise, on Wednesday a group of sailors held a marathon cruise through the whole area, most of them using special sails that had been created to voice the protest against said price rise.

There’s a JIRA entry that uses the votes as a counter of how many people don’t like the price rise here.

Here are a few pictures of the event, a video of the event is here.