I'm not sure about the automatic features of turning the well on or off but I am familiar with digging a well to keep the water level steady.
The total cost for us was to dig the well and install everything was roughly $6500. During the months that we need to run the well 24/7 the electricity cost is an additional $150 a month. It appears that money is not an issue here, but I thought I'd throw that out there for others that are interested.
We think we are getting 28 gallons a minute but that is a rough estimate of us using 5 gallon buckets and a stopwatch. Now, that being said, we don't get that directly into the pond because the well is closer to the house/electricity and runs down a ditch 125 yards away before emptying into the pond. We definitely lose some gallons per minute due to this long stretch but I think it helps the well water become oxygenated as it travels.
All that being said, the well has been a game changer for us. We are able to keep our pond in great shape year round. The ditch is our greatest asset when it rains too because it is tied into our natural watershed. When it does rain, our ditch is already full and saturated which creates even greater run off into the pond.
