A lot of other mmo's offer their paid currency monthly to members. I think monthly crowns would be a nice addition for members. Maybe like 500 a month. For some of us 10 dollars a month is all we can really spare to play the game and we miss out on a lot of nice stuff in the crown shop like event items.
@InkPaperBlotts - the problem isn't that I don't want to buy crowns, it's just that as TayB stated, $10/month is about all I can afford. It's a RARE treat when I can buy crowns.