The same email advertising Rivers clogs for $3.95 ea (see: https://www.ozbargain.com.au/node/130399 ) also mentioned Black Shoes are 1/2 price.
Clearance Black shoes start from $4 on the website, sandals/joggers start at $7.50.
http://www.rivers.com.au/Online_shop.htm
Open the shoe category you want, then search for 'Black' - any 'Black' shoe is 1/2 price.
In-store there are no advertising signs, but the Black Shoe discount will apply to any already discounted prices.
Local stock will vary but the Ringwood store had lots of Black women's shoes previously marked down to $12 or $15 that are now $6 or $7.50. Men's sandals also start about $7.50
so black clogs are $2?