Amazon no longer provides the option to filter by specific sellers. I mostly buy items sold and ship by Amazon.com itself. Well, the current fix is adding the below string to the end of browser URL:
For example, when searching “nvme enclosure”, the default URL is like below, and it lists mostly 3rd-party sellers:
But if you add “
&emi=ATVPDKIKX0DER” to the end of above URL:
now the searching results are sold by Amazon.com itself.