Authorized dealer BuyDig has the EF 300mm f/2.8L IS II USM open box for $5439.20. Use coupon code “CLOSEOUT20”.
Normally we are not a huge fan of open box items but this is a really good price, compare with a street price of $6699 and $7299 list at authorized dealers.
According to BuyDig it comes with a 3-year store warranty.
Sold out and probably immediately listed on ebay for profit!