I am reluctant to help someone get data for free that they can get by paying for, especially if they intend to sell it themself. We have no way of knowing what you intend to do; it is foolish to trust someone we know nothing about.
It is likely difficult, probably impossible, to use curl to do that, at least to get the updates. The data appears to be generated dynamically so a simple curl would not get it.
I have not looked at the code but here is what could be happening. When the data is updated a request is sent to the server. The server (perhaps using PHP) sends data back to update the page. If that is happening then it will be quite difficult to bypass their system. Well, you might be able to but it is so technical that I don’t know how to do it.