Cheap shower enclosures, do they exist?

I'm after an 800mm or 900mm shower enclosure (acrylic or fibreglass) in either Sydney or on the Central Coast, but can't find anything under $600, and not a single one that's second hand.
I feel like I'm missing something obvious, surely there have to be some somewhere?
Doesn't even have to be in perfect condition.

If you know of one, please let me know!

 

Would a corner one work for you? vidaXL Shower Enclosure 80x80 cm Curved

 

I want to avoid having to tile, if at all possible. Plus ideally, I'd like to plug in the drain, hot and cold water and be done with it, rather than having to do more plumbing (asbestos walls, so want to minimise disturbance).

 

Isn’t that show the curved acrylic ones work? No tiling, I mean?

 

Pretty sure that one is walls, tray base and the doors.

 

If you're happy to just get the shower part and don't need doors then this advert appears to be in Central Coast and around $400

Shower cubicle recess | Building Materials | Gumtree Australia Wyong Area - Lake Haven | 1255178657

 

Otherwise just use aquapanel or similar for your wall inside the shower recess.

 

You can make one from Bunnings too

Shower walls Estilo 90 x 90 x 190cm White Acrylic Shower Wall
Shower tray/base Mondella 900mm White Square Resonance Shower Base