Some places that offer bulk USB sales include eBay, Amazon.com, PremiumUSB.com and CustomUSB.com. The number of USB drives per pack varies depending on the storage size. The USB flash drives come in different colors or a pack of the same color.
Sellers on eBay offer bulk USB sales for different storage sizes including 1GB, 2GB and 8GB. eBay allows sellers to choose by price and seller's location. Amazon.com offers bulk flash drives in various colors. CustomUSB.com makes and sells custom USB flash drives in bulk to suit particular designs and styles. PremiumUSB.com sells USB drives directly to buyers with capacities ranging from 128MB to 32GB.