I've never seen 30% off except from Zoro on their higher price, best I have seen is 20-25% off. On a $400+ kit best you can hope for is a free bare tool up to $200. The 2763 bare tool is $219, so for another $80 you are getting 2 5.0s, charger, and case.
Well... maybe 5.0 batteries. Toolup never emailed me back but I think I'm going to chance it anyhow. It's a pretty nutso deal.