Hi,
Regarding the digital indicator, it can be done by various methods, like through a LED bar graph indication , Digitwise Percentage indication etc. The same can be done with microcontrollers, or just bargraph decoder IC or with ICL7107 type IC etc. If you share more info regarding this, hope we can provide a good design accordingly. The amount quoted for only bidding purpose, it may vary according to the complexity . Hoping for your reply.