Resort and Resorts

From my own research I’ve surmised that it is quite expensive to take taxi (or tuk tuk or otherwise) from Karon Beach to Patong Beach, perhaps as much as $10 US or am I off? Is there any cheap way to get from Karon Beach to Patong Beach and vice versa?
Regarding Hungrymon’s comment I’m not worried about people staring at me. I’m Chinese so I think I might fit in better than you so I might give those buses a try.