Martin Marietta, the international building supply company based in North Carolina, has bought nearly 2,000 acres in Lee County. The company, according to county records, paid $620 million for the land in two separate transactions – one for $420 million and another for $200 million. In all, the sale was made up of 23 parcels on Alico Road near Corkscrew Road totaling 1,986.2 acres.