Amazon has 128GB SanDisk Ultra Dual Drive Flash Drive (USB Type-C, USB 3.1) on sale for $14.99. Shipping is free w/ Prime or on orders $25+.
Newegg also has 128GB SanDisk Ultra Dual Drive Flash Drive (USB Type-C, USB 3.1) on sale for $14.99. Shipping is free.
Western Digital has 128GB SanDisk Ultra Dual Drive Flash Drive (USB Type-C, USB 3.1) on sale for $14.99. Shipping is free on orders $25+.
B&H Photo also has 128GB SanDisk Ultra Dual Drive Flash Drive (USB Type-C, USB 3.1) on sale for $14.99. Shipping is free on orders $49+, otherwise shipping is $3.99.