i understand that there's 15GB/month of bandwidth included in a free micro instance (and i have used one as a personal ssh tunnel without paying anything). the images in the link i gave - https://cloud.torproject.org/ - look like they include some limited to the free amount.

for something like this, personally, i am also willing to spend some money [i am still working on aws trying to get an image working - last attempt failed through lack of scsi drivers afaict - will post here if successful].