I think piggy values have gone up, the more commons (like Minty) sell for about $250 to $300, and the rare's (like Perla etc...) about $450 to $500, highly dependent on condition. Intact eyelashes, hair cuts and discoloured bodies will greatly affect prices.
The German's I'm not as familiar with. $100 to $150 each? The blue one is more popular. They don't seem to come up to often.