Hello Oakie

There was just one on eBay that failed to attract any bids.
It may still be available (send a message to seller).

http://www.ebay.com.au/itm/Scott-Bonnar-Scarifier-Detach-Immaculate-Refurbished-Not-Cylinder-Reel-Mower-/121844536125?hash=item1c5e80133d:g:fDMAAOSwk1JWdfMY

Hope this helps.
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Jack