This is the cheapest I've seen these for a long time, the best I can find on StaticIce right now is $219. The price drop is likely to make way for the new models which will be released very soon.
I have the Vulcan 100 and it's the best 'board I've ever owned. Extremely well-suited to my hands, very comfortable to type on, and looks really cool as well. The short travel of the keys helps to increase my speed and accuracy all-round. These have a tactile key and make a modest amount of sound. I used mine in an open-plan office for several months before being chased home due to COVID and nobody complained. The stems look like they'd accept some o-ring dampeners but I've never tried them.
Delivery is $5.90 to most metro areas with Aus Post, the cost may be higher to some regional locations.