If you know your target audience, you might also know the general list of their beliefs and prior assumptions. It would be useful to learn the exact ones for each visitor.
When a visitor comes to your sales page, immediately show them a pop-up with a list of these beliefs and assumptions, and ask them to choose the ones they identify the most with. Based on their answer you then display slightly different sales page – emphasizing the relevant sections to address these – to each visitor.
It will force you to write in a way that makes the reader want to read more, and at the same time get the reader used to clicking to get more which might help with the call to action.
Instead of showing the whole landing page at once, you only show the first section and the rest of the section’s sub-headlines. This means that you need to write the first section (and subsequently each one following) in a way that makes the reader want to click on the next section’s sub-header to read what’s coming next in that section. It’s like a serial story or a TV series – you use a cliffhanger. You might also want to have a simple call to action at the end of the first section explaining what to do next.
Using a higher price will make the price you are asking seem much more reasonable. You need a tool to help you keep that in front of your visitor al the time.
Have a floating box (to the left, right, bottom or top of your page) showing your potential buyer a product that is much much (even ridiculously) higher price that what you are trying to sell. The floating box always stays visible even when the visitor scrolls up or down.
You are thinking about buying a new car, so you try to decide which model and how to finance it. A car dealer might try and proactively sell you a car and help you find financing. This is true for many other products. The common third party in many cases is the bank financing the deal.
Banks should have their own sales people who proactively do the matchmaking. They hunt for good customers and good businesses and approach the client with concrete offers based on their knowledge of him. In other words, they are the initiator – they sell the right product to the right customer and get to sell their financial services at the same time.