you would have to buy another $20/1 gigs-- BUT that month would start the day you purchase the new plan. the cycle restarts to day one. so you can opt for $30/2 gigs for a full month if you think you're going to go over 1gig rather quickly.
and if you go a full month without using the full 1gig (or whatever you purchased), your usage expired so you have to buy a new plan.
make sense?
also, again someone who's vetted in Verizon usage step in if i'm saying anything wrong. this is how i understand it anyway.
I can live with that. Went to Best Buy today to see if they had any. I have a Best Buy gift card that I want to use. All sold out.