[nznog] How many ISP's charge their customers to query DNS?

I know this is a "consumer" question, but I find it very strange... Quote from the Paradise Help Desk Email system when questioned about why I was being charged to access kirsty.paradise.net.nz , their secondary DNS Server... "Kirsty is our secondary DNS server, you will get charged traffic connecting to our DNS servers." Any other people working for ISP's wanna comment on if they charge? I know, from what Xtra's support staff said, they don't.. I just find it really hard to believe.