Newegg offers three ADATA 16GB Premier Class 10 UHS-I microSDHC Memory Cards with Adapters for $8.99 with free shipping. That's tied with last month's mention, $2.99 per card, and $6 less than the lowest price we could find for this amount elsewhere. (It is also the lowest price we've seen for any 16GB microSDHC memory card.) They feature transfer speeds up to 85MB/s.
Some chains have retired their senior discounts. But these grocers still have deals for the silver-haired set.