Tackle World on Gordon Road came on board, with owner Russell McCarthy agreeing to reduce the price of a swag from $189 to $85.
He also agreed to provide sleeping bags for just $25.
They ended up collecting eight swags and had 10 sleeping bags donated.
West Aus Crisis Care chief executive Lynn Rodgers said according to the 2011-12 Census, there were 70 homeless people living in Mandurah.
�Since then the problem has escalated,� she said.
Mr McCarthy said he met a man living in his car in White Hills and this had moved him to help.
Mr Schumacher said the money donated to West Aus Crisis Care was used in the region.
Mrs Rodgers said more than 150 people attended a Homeless Prevention Week event on the foreshore.
�It was organised by West Aus Crisis Care, the City of Mandurah, Shelter WA and other community groups dealing with crisis and homelessness,� she said.
�We raised $900 for the eight swags.�