Talk:Crystal Waterfall/@comment-5051663-20130321185925

Under Tooth In Advertising, even someone who bought at the last second (Nov. 27 at 6PM) should be able to get 420 crystals using an ideal collection schedule as promised. In 120 days (which happens to correspond exactly with 4 months), less 12 hours build time, you can't do that. You can get 409 (120 * 24 / 7 - 12/7, drop the .7143 fraction). I'd hope it doesn't shut off until after Mar. 27. Maybe Mar. 31.

In actual collection, I got 383 crystals (bonus 20 does not count here) in 120 days for a net profit of 204 crystals (here I am counting the bonus 20 as a reduction in cost).