I hate selling to people. In my perfect world, my readers should just buy my products. I mean, they read my blog, trust me, so should be natural they buy from me, right?
Unfortunately, humans are a bit more complicated than that, and you need to have a sale process in place if you want to monetize your blog.
Your prospects are at various levels at any given time, some might be ready to buy immediately from you, others might need extra information about your product.