You have to create a simple platform in any language or using any script or framework.
***for Details download jpg image attached.
-No need esthetic design.
-Files must upload via ftp to website
-Login access required (configure this data in source code manually)
-The platform must read data and numbers in real time from external website
show data and send email if my user is different to highest price data. (if its possible and simple to do, instead send email automaticly, show a mobile notifcation with sound and vibrating )
-Option to enable or disabled platform
-add email address in source code or in platform front end
any doubts ask me please.
I want most simple, fast and cheapest way to do this.