Mini tripod grip for TZ99

[Pat the photographer]

I have just purchased the new TZ99 and was interested to see in the manual that there was a mini tripod grip DMW SHGR2 I could get as an accessory. Bizarrely, it doesn’t seem to be available anywhere and Panasonic say it’s not for sale with this camera, whatever that means. Does anyone know where I could purchase this device or if there is a similar device that is compatible with the TZ99.
Thanks for any help anyone can give me.
The file attached is taken from Panasonic’s website.