All the new SR5 double cabs seem to cost about $60,000 on the road? Not $50,000 and that's for the cheaper manual.
The Red Book price for a 2013 model with 120,000km on the clock is only $33,000 private and $27,000 trade.
So it's worth about half after 4 years and you've burned $30,000 not the $12,000 you got from Toyota 4x4 fantasy land.
Of course after it's been to Fraser Island and a few beaches it wont be worth that much with all the corrosion taking the shine off it's appeal.