it's called rapidleech, i tried it on vcoderz before and the download speed was only 7kb/s which is nothing big.
However if you wish to download torrent files to your server it's impossible to do it with a hosting plan even if you got SSH access it's very limited.
VPS is your own system you can remove and add anything you want
And it's not that expensive in fact, you can get a small one for something like 20$/month but you better not host big stuff on it.