A salesfunnel contains multiple products, but should in no way be the same product in different versions. That'll ruin a business before it takes shape. They should be products in different price ranges all complementing eachother. If you'd have yet another version you give away for free and those on your list decide to buy AGAIN the same ebook in a different version they'll just ask for a refund...and you cannot deny a refund.
Don't make it sound so easy....it's not that simple.