I just think if the Caroline Springs mower was half the price it would usually take weeks to find someone willing to fix it and possibly no one would buy it.
I've sold 7 ride on mowers all missing engines and all sold for $50 or less (MTD ,Rover ,Deutscher ,Bolens) ,none of them were bought to fix even though some just needed an engine bolted in.The buyers just wanted them for parts to fix the mower they had and it still took me a long time to find buyers.
I had a 8 Hp Masport slasher just missing the engine and I couldn't find a buyer for $25. the Masport.and a complete ariens ride on went to scrap as no one was interested.
Usually I find old non working complete ride on mowers and slashers for $50 tops, just not many people willing to put the time in to fix them ,I don't blame people for not fixing the older ones as people won't pay much for them when they are working.
Not sure what the cones look like on the Deckson but anything can be fixed ,I've had a few ride on mowers where the diff gears were worn out and I just converted them to a solid back axle.