American seller and eBay member for over 20 years.
High-speed 256K SRAM 32Kx8 Winbond W24M257AK-15
The photo is of one chip, but they are all the same.
Shipped via fast USPS First Class Mail with full tracking. Shipped from a USPS regional SCF (Sectional Center Facility) so delivery anywhere within the U.S. is only a few days away (excluding the occasional USPS misdirect).