As one of its daily deals, Best Buy offers the SanDisk 64GB Pixtor SDXC Memory Card, model no. SDSDUSC-064G-AB6CN, for $29.99 with free shipping. That's $70 off and tied with last month's mention as the best price we could find.
Also available is the SanDisk 32GB Pixtor microSDHC Memory Card, model no. SDSQUSC-032G-ABCMA, for $14.99 with free shipping. That's $45 off, $3 under our mention from last month, and the lowest total price we could find. Both deals end today.
Update: Specs corrected.