Audrey.
I recently bought 4x1gb SD Cards from:
oddsandpods.co.uk for £3.99 each +pp.(3.95)
They come in their individual cases and work on the KN7

Regards
Peter B.

RAY....
2G SD cards are plentiful even here in remote S.E. NM.
The 1G SD cards are "scarce as hens teeth" as my Grandmother used to say.... Being a "frugal Frieda"...I keep looking! Most likely I will get the 2G cards which are actually cheaper than the 1G when they were first available!

Elizabeth