I wonder why don't you run your own Insight server, rather than looking for other's Insight server?
EDIT: Aha, so it is capped to 10 KB/s, so that it takes about 21 hours to download the file. Smart business model.
Apparently you can ask for higher speed if you are a business or an academia/non-profit organization. Too bad there's no option for hobbyist or have BitTorrent option so other user can act as seeder and you have higher download speed.