“A Free Physical”
The “get your no-cost CD today…” strategy tells your prospects they can get a free physical information product mailed or shipped to them. They will likely pay for the shipping or mailing fee if it will help them gain their desired benefits. You could also mention that you only paid to have so many copies of the physical product produced so your supply would be limited. It will give them a sense of urgency to jump on your offer. People place a higher perceived value on a physical product, plus you could always upsell them a higher priced product.