Sorry i dont understand...bad english

You dont sell the set trough the raffle anymore?!
I go out of the raffle if its only for 1 rack.
The raffle is still going, but I'm also going to sell per rack now.
There are three types of chips in the set: $1, $5, and $25. As long as all three types are still available the raffle will continue (down to 100x $1, 100x $5, and 100x $25).
If there are only two types of chips in the set (like only $1 and $5, or only $5 and $25) I will cancel the raffle, because in my opinion you need at least three types to be able to call it a chip set.
So:
If I sell two racks individually, there are still 700 chips remaining in the raffle, and the number of tickets will be reduced to 84.
If I sell four racks individually, there are 500 chips remaining, and the number of tickets will be reduced to 60.
But if I sell the rack of $25 chips, even though there are still 800 chips left, there would only be $1 and $5 chips. At that point I will cancel the raffle, because you can't host a game with 400x $1 and 400x $5 chips. The remaining 800 chips will be sold as individual racks then.