[oliwarner]

You can use --limit-rate=500k if you want to limit the bandwidth you're consuming.

And load does not translate to cost for everybody. If you saturate the connection to my VPS, I don't pay more, it just gets slower for everybody in contention. I can spin up mirrors but if I'm offering a free resource like this, I'd be more likely to limit the bandwidth-per-client-IP or just actively let it run slow. They could even limit the bandwith to the subdirectory with...

    location /download/ {
        limit_conn addr 1;
        limit_rate 50k;
    }