>>7611069simple google image search would have told you that is an art doll by marina bychkova. her dolls are strictly art dolls, ooaks, and are mostly made of porcelain (if you looks closely at the picture you posts, the eyes are painted, meaning no eyeholes.) that giant one is likely a ooak.
her dolls sell anywhere between $26,000 - $75,000.
tldr; sorry but you're shit outta luck
pic related is the one that went for like $76k