so why not an easy app to alarm in your phone even you not at home?
Yeah, there already are several... But having an actual object on the wall/desk that shows you the price 24/7, like a digital clock, is kinda "fancier." And I and many others have WiFi on phones turned off during "sleep hours" to not waste battery life, so I could potentially wake up and the price dropped to $50, lol! Extremely unlikely, but yeah...