Yes. Numerint only only charges for the incremental work needed to export the files it hasn't already exported. For example, if you paid and exported the first quarter of 2024, and you return and request the first half of 2024; the system had already exported the first quarter and only charges for the second quarter*. You will go via the checkout to pay for the difference and receive a download of the first half of 2024. You could then repeat this every month or quarter, whatever suits you.
* Note that if you Disconnect in the meantime and choose options requesting Numerint to delete everything then you would be charged to re-export those periods again. But, in this example, if you have safely stored the download away you won't ask for the files from that period again.