Seems like Taotronics upgraded PCA-004 model with 15mm amplitude unlike recent taotronics deal like below.
https://www.ozbargain.com.au/node/675356
Description and Look matching with official website description. (https://www.taotronics.com/products/tt-pca004-massage-gun-po…) Have great reviews on amazon and looks good from Fakespot review as well.
Seems the Gray version is $83.89 using the same link..