cool, an Amati Eefer. Check past auctions and see what they fetched. I faintly remember the plastic Bundies went for ~$250, while wooden ones in good condition can fetch $500+.
That is somewhat irrelevant as long as a potential buyer knows nothing about the state for the instrument, how's the wood, does it look neglected or well cared for, are the pads shot or new...
Edit: checked the pictures again, it's a Lignatone, still made by Amati or Kohlert. And its state is less than stellar so it needs an overhaul. $300, tops as is.