GoDaddy charges $9.99 for .ws which means domainsite is the cheapest of all for .ws
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DomainSite is reliable, have good experiences with them. There was a bug in the DNS/WHOIS system somehow, I changed my address (I have moved recently) and the old address still showed in whois.sc ; a few mails to DomainSite later the problem was solved.
For .cc I think you pay at least 14 bucks or so, .WS has prices comparable to .com