It seems when these custom mold orders come along, there is a mad rush to get them sent in, just as soon as 25 are spoken for. And it also appears there are people who also buy up any extras in short order.
May I suggest, once the minimum number is reached, to leave the order open for another few weeks. This will allow others to find out about the order and get in on it, from other boards. Since these are custom designs for the most part, this may be the only chance for people to get the molds. If a second run is desired, it is more difficult to find the minimum number for the order, as many will have already been in on the first go-around.
These, being custom orders, take longer delivery time. So, when ordering anything custom, it is something you expect to wait for.
Just some food for thought, as I would like to see as many as possible get in on these molds when they are made.