I started the Rapid Results plan 19 days ago, and I'm down 9.2lbs. I'm hoping to knock that last .8lbs off by Sunday for a round number in 21 days. 10lbs in 3 weeks seems very good to me - it's a sustainable loss rate. I'm also never hungry, I frequently skip the starch servings and LA Lites (actually, I'm using Lunas), and although I did end up throwing out some veggies as they went bad because I bought more than I could eat quickly, I'm finding it affordable. I'm not even doing any regular exercise.
Also, my Walmart has the Hollywood 48 hr diet juice for only 15 bucks for 32 oz, so that's affordable too.
Unfortunately, I don't have answers to your questions 2, 3, 4, and 5, since I just started, but I'm very pleased with it.