Is the reason for this just the load on the servers? I've put a some work into making sure my scripts aren't hitting your site too much.
Could you post an access_log summary of your top 50 IPs or something so we an idea of the problem?
I'm not trying to be a pain, but could you define "script"? I think there's a difference between collecting a huge volume of jewels and just parsing the XML files to be used in calculations and planning.