Adorama offers the Sigma 70-300mm f/4-5.6 APO DG Macro Telephoto Zoom Lens for Canon
, model no. 508101, bundled with a $25 Adorama Gift Card
with free shipping.
Assuming you'll use the gift card, that's the lowest total price we could find by $25. It features a 58mm digital UV filter and comes with a hood, pouch case, lens caps and cleaning kit.