mwave.com offers the A-Data 8GB Class 10 Secure Digital High-Capacity Card
, model no. ASDH8GCL10-R, for $12.99
with free shipping
. Plus, receive a $2 Mwave Coupon
with your purchase. Assuming you use the coupon, that's $1.37/GB and the lowest total price we could find by $2. However, we saw this card for $1 less a month ago (since expired).