“Leon Golub: Graeco-Roman Colossi 1959-64 + Erotica, etc., 2000-03” at Ronald Feldman Fine Arts until February 7 (31 Mercer Street, between Grand Street and Canal, 212-226-3232). Prices: $5,000-$350,000. “Sandy Walker: Large Ink Drawings” at Wooster Arts Space until February 14 (147 Wooster Street, between Houston and Prince Streets, 212-777-6338). Prices: $2,000-$5,000. “Jacque Rochester: Paintings” at … Continued