BuyDig offers the SanDisk 8GB Extreme Pro Class UHS-I Secure Digital High-Capacity Memory Card, model no. SDSDXP1-008G-A75, for $16.99 with free shipping ($2.12/GB). (Click through to BuyDig to see this price.) That's the lowest total price we could find by $10 and one of the least expensive 8GB Class UHS-I SDHC cards we've seen. This UHS-I (Ultra-High Speed) card features up to 45MB/s read and write speeds.