Well first, you can ask if people in your target market would like to sign up for your newsletter. It’s free.
They think, why not. I can unsubscribe anytime anyway.
Then you could ask, would you like to get this nifty, awesome product that I’m selling? It’s free for a limited amount of time.
They think, sure. I like free stuff.
Then you could ask, if you liked the free version of that product, I have a paid version. You can try it for a discounted price, but you can cancel if you change your mind.
They think, well, I did like the free version a lot and this discounted price is a fair price. I’ll get it!
Then you could ask, if you liked the product, I have the full upgrade of that. I can only offer it in full price because I would be losing money if I didn’t. But I promise you, it’s worth it.
They think, I haven’t regretted getting the product at the discounted price. It was really useful and they gave me more than I anticipated. I think I’ll purchase the full, upgraded product.
Foot-in-the door technique well played, sir. Well played.