They are not easy to SIM unlock for use on other providers
https://www.amazon.com/gp/aw/s/re…s9+prepaid
This deal is only for people who are already using those providers or planning to use those providers for a very long time. Customer service from Amazon is light years ahead of Samsung for easy returns or refunds if anything goes wrong.
This is sold by and shipped by Amazon so any promotions like the $30 off $60 amex promo or $15 off $60 chase rewards promo or courtesy credits and of course Amazon Gift cards can be used for the purchase.
With the Amazon store card or Amazon credit card you can also get 5% rewards on the total price paid.
They are not easy to SIM unlock for use on other providers