Another doubtful World of Warcraft site is currencyvendor.com hosted on the same server as these other WoW scam sites.
Does it look trustworthy? Well, no. It's hosted by YoHost.org on the same server as a load of WoW scams sites, phishing sites, fake internet companies, bogus pharmacies and all sorts of other things. The domain was set up a few days ago, and is hosted on an anonymous server with anonymous contact details. Given the very high number of scam sites on this server, the lack of history and the anonymous contact details we would strongly recommend that extreme caution be taken if dealing with this site.
Update: the people behind CurrencyVendor.com deny that it is a scam, but acknowledge that their web host does host scam sites. They also decline to identify themselves. Draw your own conclusions, but as a general rule doing business with someone who refuses to identity themselves is a bad idea.