Wow. 50 megs huh?
Is this space you need JUST for storage?
Or will folks be downloading it from there as well?
If it's just for storage, you could burn it to a cd, but if you are looking for an online solution, I did a search for "ftp space" on Yahoo, and here are the results:
https://search.yahoo.com/bin/search?p=ftp+space
Good luck!
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS
izzylong.com