I think this is a myer in-house brand. Price seems reasonable although the RRP seems unlikely, looks like myer has perpetual 1-day sales
100cm is also available in black
100cm black(myer.com.au)
100cm natural(myer.com.au)
100cm white(myer.com.au)
80cm natural(myer.com.au) (may be OOS, couldn't checkout with this)
80cm white(myer.com.au)
100cm OOS for me but got the white instead. Thanks OP!