Amigakit does not have them in stock ATM, but Vesalia does. I am worried as this is my next foo purchase, but I really hope they aren't all gone by the time I get one 
If you are a regular customer, ask them to put one aside for you, but only if the time before you can purchase is short. Asking them to wait more than a week or so would not be cool. They might say no, or they might say yes, it does not hurt to ask.