I do have some lawns in which the soil structure(platy at surface) is just unbelievable... I doubt seriously that water soluable N will even go into the soil and bind with any normal CE site... Once N is dissolved and taken in by the grass through water, I believe that the rest will just evaporate... This lawn can have standing water in the morning,,, then be black cloud dusty in the afternoon when mowing... Is there any reason to bother with an expensive high quality fertilizer for a lawn like this??? OR,,, indeed is there such a thing as a Quality Fert vs. a Cheap Box Store 26-0-0???