Why? I think it’s perfectly reasonable to think that distributing books about effective altruism would be a very effective use for $30,000 of donations. Most EAs give 10% of their income; if you assume the average EA will make $100,000 a year over a 40 year career (pretty reasonable for people at the IMO), this book only needs 1 of those people to become an EA for this to break even. (In fact, it doesn’t even need one — it just needs to be a 1% chance of producing a single EA!)

My Fermi estimate is probably off, but it’s a pretty sensible argument to me.