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Elec.Valley via eBay has the Canon EF 100-400mm f/4.5-5.6L IS II for $1649.00 (compared with $2099 authorized). This is the lowest price seen yet on this lens.
Elec.Valley via eBay is a reputable unauthorized dealer. This is a grey market / import lens for which a Canon warranty is not guaranteed. 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.
eBay = the best deals
Great price
Grey market tho.