The key to places like Kingsnake is that you look for what you want, at a price you like, then you look up the seller online to see if there is any bad or good reviews on them. Faunaclassifieds BOI(Board of Inquiry) often has "good guy" or "bad guy" posts and you can also post here or on Fauna asking about a particular seller BEFORE you start contacting them or sending money out.
If you Google "dragonherps ball pythons" their site comes right up. I'm not sure if I should post a link, or if that would be considered advertising. I have not dealt with them but I've never heard anything bad, just good things. Their website offers a side menu you can click for "cinnamons" and it still shows the super for sale.
Do research to make sure you want to buy from ANY seller, before you start sending money. Generally if someone is ripping people off, there's people online who have complained about it. Use search terms like "rip off" or "bad guy" and such.