You have to teleport to buy/sell.
But which one is the Badge for the Dragon Age Quest? On Mainpage it states the 10,000 Gold one, but in details it requests the medium one (campaign completed).
I solved the riddle:
It is not only starshaped STARS you are after. If you complete a level with the "perfect" number of cuts, you will get a "STAR" too. I tried to complete a level with fewer cuts and get the missing STARS. (by Parity)
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 "Jump Out! The Box"){kind=icon}
 "Deeper Sleep"){kind=icon}
 "Super Duck Punch!"){kind=icon}
 "Rings"){kind=icon}
 "High Tea"){kind=icon}
 "Crush The Castle 2"){kind=icon}
 "One Button Bob"){kind=icon}
 "Battalion: Vengeance"){kind=icon}
 "I Remain"){kind=icon}
 "Blast Master"){kind=icon}
 "Bubble Tanks Tower Defense"){kind=icon}
 "Icebreaker"){kind=icon}
 "Monsters' Den: Book of Dread"){kind=icon}
 "Super Energy Apocalypse : RECYCLED!"){kind=icon}
 "Toss the Turtle"){kind=icon}
 "Doublue Wires"){kind=icon}
 "Pirate Defense"){kind=icon}
 "Splitter"){kind=icon}
 "Spewer"){kind=icon}