Buying memory is such a chore... You have to search online for prices, filter through which ones are legit, around a bunch of stores,compare prices, finally buy your memory, and then hope that the price doesn't drop in the next two weeks or so.
I've been done in by crazy price changes in the past... especially this one time when I bought a Micro SD for my R4 gaming flash card at what was apparently a steal, only to later see that it fell by $5 in a week.
(Posted on Nintendo DS running [url=http://kwstar88.livejournal.com/491.html]R4i[/url] N3T)