I don't know about a backup for the backup. (Aside: this is starting to seem like a scene out of Terry Gilliam's Brasil -- "There's been a complication with the complication.")

I'm thinking more about pre-emtively buying these things for friends of mine, then reselling them at cost once I've "made the sale." With prices like these, I expect SonicBlue is trying to deplete their inventory before the end of the calendar year, and I expect they'll be quite successful at it.