John,
You won't miss out, PG Music always look after customers. If you went for the $99 plus bonus pack, if it turned out not to be what you had hoped for, I'm pretty sure you'd be credited towards getting the USB drive. As I see it, it's a variation of PG Music's '30-day money back guarantee' policy. Because I'm not sales staff, though, I could be wrong. Why not ask them about it?
Regards,
Noel