We know 3 variations of the Samsung MUF with the above specifications:

SAMSUNG Type-C™ USB Flash Drive, 256GB, Transfers 4GB Files in 11 Secs w/Up to 400MB/s 3.13 Read Speeds, Compatible w/USB 3.0/2.0, Waterproof, 2022, Blue, MUF-256DA/AM
For $26.99 on Amazon (As of Apr 28, 2025, 05:26 PST - Details)

Samsung USB C Flash Drive 256GB 400MB/s Read 110MB/s Write USB 3.1 Flash Drive for Notebooks, Tablets and Smartphones, Blue, MUF-256DA/APC
For $46.59 on Amazon (As of Apr 28, 2025, 13:29 PST - Details)

Samsung 256GB Type-C Flash Drive 400MB/s Read USB 3.1 Flash Drive for Notebooks, Tablets, and Smartphones MUF-256DA/APC Bundle with (1) GoRAM Lanyard (256, GB), Blue
For $42.85 on Amazon (As of Apr 28, 2025, 13:29 PST - Details)