United Airlines changed the United Club pricing effective immediate yesterday and sent an email to (at least some) members.
There is a change coming on August 18, 2015 when Premier and Premier Gold members lose their discount and Premier Platinum one is reduced by $25.
You can access United Club web page here.
You can always get Star Alliance Gold status with another airline to have “free” access to United Clubs when flying domestically. Turkish Airlines usually match to their Star Alliance Gold status easily and getting Star Gold by flying and crediting to Aegean is not that difficult.