Interesting that he claims this lottery has positive expected value, but I don't think it's true. He forgot about income tax. This is one of the standard tricks

Interesting that he claims this lottery has positive expected value, but I don't think it's true. He forgot about income tax. This is one of the standard tricks for making lotteries look better (or less bad) than they really are. (The other common trick is paying an annuity instead of money, and advertising its nominal value instead of its actual value, which is substantially greater. This one doesn't seem to be doing that, though).