Typo I'm sure.
It should not be hard to find a neo angle shower base. Call your plumbing wholesalers in your town and ask them what shower bases they carry. Then goggle the maker and find one that fits.
Or go custom with a hand made neo angle pan. I build loads of neo-angle showers and use Noble Seal TS for my primary waterproofing on the floor. It comes in 5' widths so I can do the floor, up the wall 6" and up the curb in one sheet with no cuts in any corner. Lapping it around the 45 degree bend in the neo angle design is made easier by a relief cut in the curbs backer board.
Any of the pre-made kits from Schluter, Wedi or Laticrete can be cut to fit a neo angle shape.
The AKW pan is also cuttable and allows for a level access shower.
So many options.
Work on your budget, take off 30% - Determine the timeline you need to follow and plan your attack.
Working with a flanged pre-made pan you could be wrapped up in 4 days. Remember to flood test the drain connection on the pan with an inflatable test plug and extension hose.