Earl grey is what first sparked my interest in black teas, and I still enjoy a good one very much, its a hard tea to get wrong. Very comforting. Good tea to sit down and drink causally while reading a book.
endless exploration awaits you ! Here are some vendors and prices. I have never ordered any though, e gray took a back seat because of so much else out there.
Dragon tea house : 100g $10 regular , $12 premium
Floating Leaves Tea : 28g $3 (organic)
Imperial tea :113g $8.75 (with or without lavender)
If you would like to explore more types of black tea jing tea shop, teaspring, thunderbolt tea, lochan tea are all great places to start. I've also heard good things about silk road teas. No earl grey from these vendors though.