There were a lot of questions about the upcoming Krystal charm. Zyn (the artist) and I are very happy with your interest. Here are the answers to the questions. If you have more questions, please add them to the comments.
How many will be made? Will they be discontinued?
Once the first charm is made, additional charms can be made as needed. As long as there is demand, Zyn can keep making them.
Can they be shipped? What about to other countries?
They can be shipped. Shipping to other countries may be more expensive.
When will it be available? When can we see mockups?
The first availability will probably be in August. Zyn will begin sketches and mockups starting in July. We will post progress shots as they become available.
Will there be an Assault version? What about Assault Krystal with her staff?
A different model will require additional investment for Zyn to make a new charm from scratch. However, her prices are reasonable, and then we will all have different Krystal variations for purchase, just as I am doing by commissioning the initial version. If you want a special variation on the standard charm model, you may be able to contact Zyn about a custom paintjob for a small additional cost, so that you could have an Assault Krystal with her staff, for example. That will be between the two of you to work out, however.