I am looking at plans for a connect card for my wireles laptop but I do not quite understand how they work.

The lowest plan is 10 MB and the highest is 5GB. Is that how many bytes I can use per page or is that total amount per month I can use?

I will be running three platforms while trading and I do not have plans to use it for anyhting else. Do I need the 5GB or would the 10 MB work?