For those looking at this, just a head's up - this is YC '12 DataNitro (formerly IronSpread) talking about their product.<p>Also, as a side note since I like python, it's definitely not the only way to do python in Excel. With pyWin32, you can register python code as a COM server and call it from Excel in VB. Additionally there's projects like pyxll which, while not the prettiest, are at least free for non-personal use.<p>I will say this though - thank you, DataNitro, for having a free tier.