Hello, I am selling around 500k gold on Kel'thuzad alliance, and am always farming more myself. I have 3 level 85's, and am a normal player just like you. I am avaliable most times between 3 pm EST - 6 am EST, but feel free to contact me at anytime and I will make sure your gold will always be delievered within 2 hours at the absolute latest. Delivery will almost always be instant though.
I sell at $1.35/1k gold, any amount. I am willing to negotiate prices for bulk purchases though. Payment will always be via paypal, and should always be sent as a gift. You must have proof of at least a level 80 to purchase gold.
You can contact me at anytime on skype - atompkins3