From that web site:
"Box indicates that it includes a 1 GB SD card but it is not included". OTOH if someone wants all the maps on the card, I bought a 1Gb SD card at Fry's last week for $54.99 less a $20 rebate. So it still appears to be a good deal.
FWIW we've been looking for an upgrade/aternative GPS unit. This is primarily for Chris' car when we're not in the coach, and she's not a button person, so I had her play with various makes and models while we were at Fry's - several times. She kept coming back to the Lowrance iWay 500C as the "easiest to use", so we bought it and are currently giving it a workout before our 30 days return period is up. I really like the larger (5") screen and, so far, the interface seems to be pretty good. With all the maps loaded, the 20 Gb hard drive has adequate space for MP3 songs, although that's not the reason we bought it (we have a separate 20 Gb MP3 player). It's not much more than half the price of the equivalent Garmin 2730, so I was happy with that ;D