Rbh
I would suggest you buy an older keyboard like an Alesis QS8.1 or Peavey DPM C8. They're both hammer action and weighted. The Alesis uses the Fatar T20 keybed and they're very realistic piano action.
I've got the Alesis QS8.2 (8.2.. not 8.1) and the action is light, which may not be similar to the QS8.1.