The Veritas drawknife is a nice little drawknife, but it is a detail/carvers drawknife(I own about 4 knives including a Veritas). For reducing staves into roughed out bows I prefer a heavy duty drawknife, that you cut put your bodyweight behind you, without the handles slipping off. The 300mm Kirschen(Two Cherries)from Timbecon would be better
toolexchange.com.au second hand tools similar price range to the second hand one you posted, but in better condition(some nice Greenlee's)
thewoodworks.com.au new tools
ebay Australia sometimes has em
ebay US normally has plenty of them, but then you need to factor in crappy $A exchange rate, shipping, GST
Carba tec new tools