Well, this isn't good news at all for me. I'd been adding alts to premium to offset the price increase in buying $L. So, I'll likely renew the ones already premium in one batch, then cancel the premium memberships. During that time, I'll join as many groups as i can and keep that benefit when I cancel (I just won't be willing to leave any of them like I do now). Forget any groups that have a membership fee. Sorry stores, this will also chill people from paying for any group joining fee, as people will need to be more fluid.
I'll go back to buying $L, but will do so only once or twice a year, and not buy any extra like I've been doing. That will budget me to have much less $L to spend on any other things but land that I also rent. I was also considering buying more mainland, but with just 2 premium accounts I have just enough land to make what I have now cost free. Of course, paying for 1024 extra is far less than the $99 per year, so the second one may also be canceled.
That figures out to a net loss in income for LL by my estimations. Loss of extra premiums, loss of revenue from buying $L to buy stuff. Less chance of non premiums buying $L to pay for store groups.