This is my first time advertising and I see all these advertisers saying, 'If the book's not at the discounted price we won't run the ad and and we won't refund your money.' My promo starts 3/2 and continues through 3/6. I am seriously thinking of starting the discount on 3/1 though just so there are no surprises. (Are there any downsides to doing that?) So, for example's sake, let's say I go with wanting the price to be discounted on 3/1 (which is a Sunday). When should I be making the actual price change? And do the price changes take more time if they're made on the weekend? (I'm just trying to cover all possible contingencies.) And how about ending the price change? (Right now I'm just planning on reducing the price on 3/6 at midnight.) I'm on Amazon (I am not Select), AmazonUK, D2D (iBookstore & others), B&N, Kobo, Smashwords. I'm in Chicago (Central Standard Time). Any feedback will be IMMENSELY appreciated. Thanks.