Just 1 starter isn't going to cut. Not nearly enough sites or characters to go around. 1 starter each + those TD cards is in the realm of possibility of creating 2 fairly balanced decks (but bad if you get the same fixed pack from starters, meaning you have the same characters).
I don't think they have them listed on their website, but The Compleat Strategist in New York has sealed display boxes of Unlimited Starters & The Dragons for $25 a pop. I bought up some to explore the game with.
They don't have any displays of really rare MeCCG, though.
If you're looking to get cards to create a bigger game space, I think this would be a good way to go.