Marketplace
Item on clearance. The black version goes for $66.
Call your local Bunnings to check stock. I've found plenty around VIC stores. Also at some Bunnings it's cheaper than $33.75.
Stock checker
I've bought all off the shelf at Carrum Downs VIC and they've restocked with 6 more so assuming they may have more than what's on the shelf. So check with staff if there's none on the shelf.
Product info page Lane website
Not suitable for steel doors as works of magnets.
I've found it pretty easy to retrofit to existing standard doors Leverset. Install instructions page 1 page 2
I’ve got these. Very cool.
But god damn, pain in the ass to install.
You will need to chisel heaps more out.