I have a Skeleton Key, Rev 2A I believe. They are PCB builds, but are of top quality. It's a nice and thick PCB so no worries about it flexing or anything like that. Top quality components are used as well. Overall it's a very solid build and I have zero worries about anything breaking or longevity.
It's a great amp and has the quintessential hot-rodded JCM type of sound, but also is unique enough in the "Marshall inspired" market to stand out. This could be my only amp and I'd be happily content. Most videos usually show it off going into the hi input. I forget who suggested it, but plugging into the low input and hitting it with a boost nails a certain sweet spot for me.
From what I've seen, Shea usually produces them in small batches and takes preorders. I don't know how often he builds individual amps for people. And I also think he's been focused on the Unholy Grail more recently. So I don't know when a new batch of Skeleton Key's would be in the works. Just email him and ask. Shea is a good dude and usually quick to respond. He's also a member here so maybe he can chime in. @Monomyth
And since you're in Australia, Shea partners with Jason Tong of Headfirst from time to time. They get together and will do a small batch of Club Secret amps. You might be able to go through him to get a Skeleton Key.
If you're not able to get ahold of a Skeleton Key; like @Smash suggested, look into MGL. I haven't played one myself, but from the clips I've heard it's in a very similar realm.