I couldn't get your link to take me there but some googling revealed that he's got it on Gumtree as well - I presume it's the same bloke. The link is
VINTAGE STRAIGHT RAZOR DUBL DUCK GOLD EDGE.need QUICK SALE! | Other Antiques, Art & Collectables | Gumtree Australia Parramatta Area - Parramatta | 1109533957

Some might think the price is a little stiff but if you consider what new production razors sell for it's not too bad.