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Quoted from Permzilla

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They use a middleman, and there is a forum on Sourceop.com that has middle men with positive rep that you can contact.

or you can use a Unusual hat club admin. http://unusualhatclub.com/forums/forum.php
Their servers are when most unusuals are traded. It’s like SourceOP.com but less spam

Also, Budspy is a stupidly rich man (irl) and pretty much paid cash for all of his stuff while doing profit trades. so he bought into the market but he’s made more than his money back :)