Many of us feel the ad chips are a ligitimate variation. Most were produced in very limited quantities. Gaming control rulings from a couple years ago will keep them from being made in the future.
I have 1 set of both sides of the $2.50, 5th anniversary - $25.

I have several of the Melodrama side $2.50 5th anniversary - $10 each.

I have 3 $1 with cherries 5th anniversary - $10 each.
Add 75¢ for postage.