No. The surfaces of all solar system planets are protected by international treaties signed in the 1960's that prevent this kind of purchase. Of course, for various fund raising purposes, some organizations have 'sold' land on Mercury in exchange for a donation, but such claims no matter how detailed would never hold up in a court of law. In fact, I 'own' a few acres of Caloris Basin on Mercury which I purchased in 1972.
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