Since about 2008. I have sold 6 of my major name brand (I won't name the units to remain unbiased here) units, about 2 years old each, 1100-1400 hrs on them, and gotten 75-80% of retail out of them - all sold within 3 months of putting them out there. Now I have records to show clockwork maintenance, have gone over them as if they were aircraft before sale replacing belts that were still fine, rebuilding the water pumps that were fine, etc - and you could eat off any surface in my vans, and the TM's, so maybe the reconditioning (really a few hundred in parts and time) and my OCD over their use kicks my curve way up.
Same situation for 3 off brand units. Same age and hours averaged - 6 months, no takers. Dropped my pants to about 55% and they sold in 2-3 months.
And those off brand units are made by the same manufacturer as the major name brand........ They are identical.
Mikeys post seemed to ask - drive off the lot depreciation. My response was directed towards that mostly.
As I said, start finding me those year old Everests with a few hudred hours for $20k - I'll buy every dang one of 'em
Their have been many years of fire sale prices due to companies going under, downsizing etc - a trend that will end (hopefully) as the economy betters itself.