Best Buy: SanDisk 512MB microSD/ TransFlash Memory Card SDSDQ-510-A10M
Amazon.com: Clodisk Small Capacity 10 Pack Micro SD Card 512MB Bulk Pack (NOT GB) with MicroSD Adapter Card Reader Memory Card Special for Small Data, Files, Advertising or Promotion(Too Small for Any
OEMPCWorld.com: Nokia 512MB MICROSD-512MB-NOKIA microSD Memory Card 80X Bulk
Amazon.com: Lerdisk Factory Wholesale 6-Pack Micro SD Card 512MB in Bulk Small Capacity Produced by 3C Group Authorized Licencee for Small Files Only, NOT Suitable for Camera or Phone (NOT GB, 1024MB=1GB) :
SDC/512 Kingston 512MB microSD Flash Memory Card Compatible with Motorola and BenQ Phones