The Jewish tradition (and law) is to pay to a great deal for "redemption of captives", but not an unlimited amount. The case of Rabbi Meir of Ruthenburg (13th cent.) is well known; he forbade the payment of an exorbitant amount for his own release and died in captivity after seven years. Netanyahu agreed to the release of even murderous prisoners, but only if the most dangerous will go into exile abroad or to Gaza, instead of being released to their homes in the West Bank. This strikes me as a fair position. The rest is up to Hamas. Note that pressuring Hamas about Shalit's release by imprisoning 1.5 million civilians in Gaza did not work, is immoral as a collective punishment, and according to some legal experts constitutes a crime against humanity. It is time for the Shalit family to turn to pressuring Hamas by trying to shame them in the Arab world as prolonging the imprisonment of their jailed colleagues. Let Noam Shalit give some interviews to this effect to the Arab press and al-Jazeera. This might even work.
Turkey: 5 killed in clashes between authorities and PKK (Reuters)