G'day all,
For sure, there's a market of sorts there. But these parts would be very slow-moving, which is the problem on the business viability front. Better for the business to just make them to order, most of the time, and charge accordingly.
Even the late lamented Turf Machinery Services only used to stock a couple of each of the two Diplomat bedknife types [I still use the Wayback Machine archived copies of their website as a reference].
