Not sure. I'm just relaying the message from Banzai to me.

Here is exactly what they have said.

Unfortunately, at the moment we are having issues with our Tamiya supply, which is why we have removed them for the moment. I'm not sure what will happen in the future, so can't say when we might be able to stock these products again. I'm really sorry for that.

Kind Regards,
Banzai Hobby Customer Support