Amazon currently has all three Etrian Odyssey DS games in stock: Etrain Odyssey, Etrian Odyssey II, and Etrian Odyssey III. The games can be challenging to find through other popular retailers. Amazon is charging $30 for each game.
No doubt Amazon is preparing for the renewed interest that Etrian Odyssey IV for the 3DS will bring to the series. Etrain Odssey IV releases on February, 26th and you can pre-order that game from Amazon as well. All four games are published by Atlus.
Click on the game images below to buy directly from Amazon.