Some questions:
First, where are you? Since this is a global forum, and answer or set of comments which might be appropriate in, say the central United States isn't going to be much help if you are in, say, Lithuania. Or Japan. Or...
Second, how important is portability? You mention stage or digital pianos, which suggests that perhaps portability is important. However, in the price range you mention digital keyboards are just that, and don't have either the feel or flexibility of a piano. Unfortunately, to get anything approaching the action and feel of a piano, you would need to go considerably higher in price.
However... in may areas of the world it is quite possible to pick up a perfectly good used upright -- or even small grand -- real piano, which might need tuning and a little sprucing up -- for the price range you mention, or even less (sometimes just the cost of moving it). This is very much worth looking into. Try Craigslist or eBay in parts of the world where those function.