No 512MB option exists.
Only 20GB Refurbished HDD + 3 Months Live Gold for $29.99. Memory card would make no sense seeing as how the site clearly states that an HDD is required forthe new Xbox experience.
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)