No I didn't, it was too much of a mark up for me. This isn't going into my keezer, its just a second one for purging kegs etc, so I decided I could wait for them to be available cheaply again as I don't 'need' it. Keg King told me theirs would be available this week, but who knows if that is still correct. Getting stock into Australia is such a pain at the moment.
I think once you get up to the $70 mark I'd rather buy this one which is supposed to be very high quality and comes with 5 year warranty for $90:
https://cheekypeakbrewery.com.au/harris-601-co2-regulator-5-year-warranty
EDIT: Now says 7 year warranty! I swear it said 5 year last week haha.
EDIT 2: Actually maybe I will by this harris one and swap the old one in the keezer out to do purging duties.