We have developed a system that lets small businesses issue membership cards to their clients which can then be used as payment cards. The clients either preload the card with money or link it with a credit card and then use the membership card as a payment card.
Our premise is that it's psychologically harder to take your credit card/cash out of your wallet than simply swipe your membership card, especially when you make small payments frequently. We basically believe it would improve the user experience and increase sales.
That being said, it would be much easier for our sales pitch if we had hard data to back our intuition.
Where is it possible to find such data without paying thousands of dollars for a market research report?
Is it ethical to make up a statement, say "Studies have shown sales increase by X% after implementing a payment card system"? Is there any way to make up a similar statement while remaining ethical?
If none of the above are possible, what would you do to sell a product whose main value is based on an intuition?
PS: We cannot use any current customer data as we don't have any yet.
Edit: Talking of ethics, I'd just like to point out I wrote this as the first person for the sake of clarity but I'm asking this to help out a friend.