Try Quincy/Braintree area. From what I have been told/over heard, The houses could be from 300k-750k. I don't think you will find anything closer to Boston for that much.
You can find houses in Sommerville for about as much... some friends of mine bought a multi-family for $380,000. Just brush-up on your Brazilian Portugues.... porque muitos brasileiros moran no Sommerville... (many Brazilians live there).