The Canon USA Store has stock of refurbished
Canon EF 400mm f/2.8L IS III &
Canon EF 600mm f/4L IS III lenses.
There is a decent amount of savings to be had here, and these lenses work great on RF mount cameras with the adapter.
Canon EF 400mm f/2.8L IS III USM $10,799
Canon EF 600mm f/4L IS III USM $11,699
