Seems like a standard Make It Rain quest reward to me. It's never been all that much. As others have said, the +50% MGP is the real event reward.

Quote Originally Posted by XianRo View Post
idk why but I thought we'd get the summer event at Costa before mir tbh.
Moonfire Faire and The Rising are the events that usually run one after the other. It could be the year that MIR ran very late causing the confusion.