How cheap are you looking for? I have been looking at two packages Raincadd and Landcadd with the irrigation module. Raincadd is cheaper, but is just irrigation software. Landcadd is more expensive plus you have to get the irrgation module. However they how so many different module availible that the use are almost endless. If you do more than just irrigation that might be an advatage. I haven't decided want I am going to buy. Right now I am leaning toward the Landcadd.