Israelis use land purchases to gain footholds in Arab areas and drive Palestinians into ghettos. The fact that Israelis have much more money than Palestinians should not allow Israelis to buy Palestinian land, kidneys, etc. It isn't a question of land, it is a question of ethics.
UN warns Turkey against calling buffer a 'safe zone' unless guarantees civilians' safety (Reuters)
from the article: PA court: Sale of Palestinian land to Israelis is punishable by death