quickndone via eBay is not an authorized dealer. These are grey market products for which a 1-year Canon USA warranty is not guaranteed. Readers report that Canon USA has historically honored the warranty, but this is at their discretion. They may call to confirm your order — be sure to decline any upsells.
If you are not comfortable with grey market, please consider street price for the Canon EF 70-200mm f/2.8L IS USM II ($1769.99).