Is there any quantitative study that shows how UX improvement can increase revenue of a financial institute?
For instance, for each dollar we spend on improving UX of our web apps, roughly how much increment we may expect in our income per user.
In fact, I am consulting an FI company which provides Hosted Payment Page (HPP) and other online Electronic Payment Methods as well but they are badly low in number of transactions and marketing the product.
I am trying to convince them that improving UX in their HPP not only gives them an upper hand over their competitors to promote the product but also increases the revenue as more users (Card Holders) are willing to pay through their HPP.
So I am seeking studies and cases that show this fact quantitatively to be able to calculate how much they should approximately invest on UX and how much they should expect to get back.
Any helps appreciated