I’ve tried this for years, when I have a deal on Amazon, on bargain sites, for AMEX.
It says no deal, on AMEX Membership . I don’t even try it again!

https://www.amazon.com/promotion/psp/A3E5C5TL5S80CY?ref=psp_pc_cart_collapse 1

https://www.amazon.com/promotion/psp/A228OPEMC6S7XY?ref=psp_pc_cart_collapse 1

https://www.amazon.com/dp/B07LGSYTLM?tag=phtwllt-20 1

https://www.amazon.com/dp/B00UASJHME?tag=phtwllt-20 1

https://www.amazon.com/promotion/psp/A62S4PMG73Q1?ref=psp_pc_cart_collapse 1
You can save more, buying one item, the price is even cheaper, than the price listed!

https://www.amazon.com/promotion/psp/AKJ2T8ED60AR3?ref=clp_pc_cart_collapse 1

https://www.amazon.com/gp/product/B0CBNMGZYZ/?tag=phtwllt-20 1

https://www.amazon.com/dp/B08YM5S28F?tag=phtwllt-20 1