Go to a real site, don't buy from people because thats not always safe. I would recommend Usfine.com, the sell gold very cheap and there delivery time is amazing. All my orders have been completed in under 15 mins. Plus they over great specials everyday of the week. Check them out.
I would sugges USfine.com, i've used them many times and they offer really low prices on rs gold they are also very quick. All of my orders have been completed in under 15min. They also offer specials EVERYDAY where you can buy dragon claws for $13 as an example. But just check them out.