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Newegg.com offers this ADATA 16GB Class 6 Secure Digital High-Capacity (SDHC) Flash Card for $21.99 with free shipping, which makes it the lowest price we could find by $17. This memory card is perfect for cameras and video cameras, and the fast write speed means you'll get all of your shots. This card has received 4 stars on 556 reviews thus far, as well. Only CA, NJ, and TN charge sales tax.