not true. everybody has a price at which they´d sell. if you are approached for acquisition talks, why would you decline? it´s almost always worth your time to just talk, even if you aren´t really interested in selling -- you never know how things work out.
Yes true. You won't waste the time in acquisition talks if you're not interested in selling. Yes, everyone has a price, exactly, which is why the whole notion of pretending you don't want to be bought is meaningless BS. You just don't want to be bought cheaply.
If you're in talks, you're TRYING to sell, the only question is the price.