Over the last few months there have been several Amazon US listings for various Sapphire GPUs with big discounts, usually around 45-55% off~
These listings are scams, Sapphire have confirmed so via posts on their Twitter/X account.
Please exercise due diligence and caution.
I have two rules:
Avoid buying something not sold by Amazon.
Never buy something not delivered by Amazon.
At least if it’s wrong or fake you can send it back and get your monies back with no hassle.