I think I'd give that 1000GB a run for its money. I usually use around 8GB a month and that's being careful. Probably too because I'm never home.
Oh I've tried, there is absolutely no chance!
I stream music 3-4 hour a day, constantly browsing on FB, I'm on betting sites streaming football / horse racing, I've even watched films and I let my friend tether from me wherever we go.
I think the most I have ever used is around 480GB