I ordered one from China direct a few days ago.
https://www.aliexpress.com/item/32837169373.html
They’re slow to ship (2-3 days) but they ship via DHL so it takes about a week to get here.
There are other sellers on AliExpress but not all ship via DHL, so be careful otherwise you’ll be waiting 2-3 months due to COVID.
[edit]
The link points to the 290mm variant, looks like the 120mm is out of stock at the ZWO factory. Can still get the 120mm non-mini. Other sellers have it but you’ll need to consider the postage time.