There’s no substitute for hard data. MarketingSherpa found that actual abandonment rates were two to three times as high as e-commerce marketers thought they were. They offer some heuristics for getting to the bottom of the problem, but they don’t discuss my favorite remedy – order total transparency. Got discounts? Show ’em. Got a shipping charge? Show it as soon as possible. Extra charges? Don’t keep it a secret until payment time; let them know up front.