I'm booked; the meal is honestly worth $30-40 on its own. $20 to charity, $5 to support the awesome grubwithus product, and then probably $20-40+ value for a random dinner with a VC. (for the right VC, I'd be willing to pay for flights/hotel/a day of my time, so $20-40 is pretty low. If you didn't have another way to get in front of a VC, or wanted to ask a random VC questions independent of your fundraising, I could see it being worth $100+).
Also, he worked for Hughes, invested in Bubbli, worked in Luxembourg and Japan, and went to MIT; all good things to talk about.
Learning about the thinking behind eBay's purchase of Skype minus Skype's IP would be more than worth $100, but I doubt that would get answered :)