Canon USA has made available refurbished RF 24-70 f/2.8L IS USM & RF 70-200mm f/2.8L IS USM lenses in their estore.
Canon RF 24-70mm f/2.8L IS USM $1758 (Reg $2299)
Canon RF 70-200mm f/2.8L IS USM $2064 (Reg $2699)
The Canon USA store offers a full 1-year warranty on all refurbished gear.
There are more than 20 copies of each lens available at the time of writing this.