Videos and Memory Question

I’d like to set up a membership section using S2 membership plugin and then have password/membership access to MP4 videos.

Each video would be 15-25 minutes in length and would uploaded from my desktop into the WP library.

On average, how many videos like this could my WP site hosted on GoDaddy.com handle? There must be a typical cut-off point or limit with an average site and average hosting. Can anyone please help with a rough idea on what to expect or give some background?

Thank you.