Yeah, have done that a few times. Used to have a 20MBit/5MBit cable internet, it was hell to be honest. Still I’ve managed to seed well over 500 or 600GB a month on that thing (I never turned the PC off 😂). Now I got 50/50. I used to seed about 3 or 4TB a month, but I can’t have my PC on like that any more, the electric bill was too high 😔.
Not only that, I have reconstructed dead torrents from files I’ve downloaded elsewhere (file sharing sites). If the files and filenames are the same, the hash will match, thus the client will start to seed it 😉.