Board Thread:Game Discussion/@comment-27109924-20160604031628/@comment-28333578-20160608121744

Either way, a person needs about 3500GC to complete this update. If they earn them through completion rewards, farming, WTT, and such prior to the next update than that's great. But a person will still need that number of GC on hand or accessible in order to complete this event...not to mention the need to have a significant number on hand for the next update when it pushes out.