---Would 'real estate' value be appealing, why and how?

If you thought the appearance of his territory would make a difference to the female, you were right! Yes, the male with the best 'homestead/or farm' wins....the biggest and best house on the block in this case is the one with the thickest and most well-groomed algae mat.  The male (and the female when not mate shopping!) tends his territory like a gentleman farmer, carefully weeding and trimming the algae so that a thick mat of red algae is created. It can vary in size from a foot to a yard square.  Some talented garibaldi 'farmers' create lush thick mats of red algae the size of a truck tire.  For reasons that are not entirely understood by researchers, the female rarely spawns in nests that are sparsely covered with algae.