Discovered that these are back on amazon. Not a bargain but not ridiculously priced, if I had a Syrian I'd be buying the 3 level one right now lol! There's a one level 120cm one around somewhere too, but it's pretty tall.
https://www.amazon.co.uk/Schulte-Car...=petgard+mouse
https://www.amazon.co.uk/Carlos-Mous...=petgard+mouse
And the lovely Elmo cage is back if anyone needs a barred dwarfie cage.
https://www.amazon.co.uk/PETGARD-Elm...=petgard+mouse