https://www.amazon.com/gp/product/B076V6YCCJ
The lens is currently $499, but Amazon Prime credit card holders can get 20% back on this lens, making it $399.2 + tax. The 20% back is based on the total amount charged to the card, including tax.
Amazon Prime Rewards Visa Card and Amazon Prime Store Card both qualify for the 20% back offer.
Total cost with tax for me was $430. This is by far the lowest price I have ever seen for this lens. I was going to buy this lens from eBay with the 10% off, but this was even cheaper.
The Samyang version is also available for a $1 more: https://www.amazon.com/Samyang-SY…B07BH49JSY
Just picked up this lens for my A7iii that is arriving in a couple of days.
Many other photography related items (lenses, cameras, etc.), available with the 20% back offer here: https://www.amazon.com/l/17985366…JNI5