Well, it's an interesting question. Is there a market for a $300 sprinkler controller? Rain Bird doesn't think so. I paid about $50 for my controller, and it's relatively easy to use, certainly better than the OPs: http://www.amazon.com/gp/product/B003LY4I14/ref=wms_ohs_prod...
Also, the OP is eliding over the fact that that controller is probably 10 years old.
Also, the OP is eliding over the fact that that controller is probably 10 years old.