I'm interested in power measurement (rolled my own), so I took a look.
The ready-to-buy pricing is interesting.
A power consumption measuring module for 8 lines is £324.00; a common breaker box with a capacity of 40 circuits will require five of these, for a total of £1620.00. Then you'll need 25- or 50-ampere current sensors, 40 of them at £12.00, adding £480.00. Now, if you want remote control through their cloud, add another £295.00 for the gateway module. The power supply module is £50.00. Then you get to subscribe to their cloud solution, I think, an idea I got by the "free one year of cloud subscription" you get with a small bundle of components they sell -- though I didn't find a price for the cloud itself.
So a one-breaker panel solution seems to be about £2445.00, or at today's exchange rate, $3,843.13.
That's not horrible for what it does in terms of commercial solutions, but it certainly isn't in the low-end zone, either. You can make a calibrated current sensor for under a dollar if you dig up some surplus ferrite, which I've not found to be particularly difficult (though ferrite isn't the only workable way to go. An optically isolated op amp configured balanced over a tiny resistance also works great.) So roundly, $40 for the ferrite based solution. An op amp and an A/d channel together don't amount to a dollar per either, so another $42 for those (I use a final pair of channels to watch AC voltage and phase at the breaker box, comes in all kinds of handy. Power consumption's not just about current!) Add about $10 worth of digital logic, a $40 Raspberry Pi [there's your computer and wired web server, add $5 to put it all on wifi], roll your own software and PCB or hardwiring, throw in a tiny power supply, and for about $150 US, you've got equally capable -- or better -- measurement capabilities. If you want to be fancy and uber-safe and avoid the whole ferrite space and cost and availability issues, you can add $5/line for another $200 cost for optically isolated op amps would would put you at about $350. And of course there is no need whatsoever for a "cloud." Just a webserver, which the Pi or similar can neatly provide. The Pi is a good choice because it's low power, well supplied with features, and capable and sufficient to the task. You can toss a monitor, keyboard and mouse on there permanently too if you want a fancy at-the-breaker-box position, but you don't actually need to, so I don't count that.
I did wonder what it'd cost to build from their PCBs, but there doesn't seem to be any way to really figure that out other than doing it. Pretty much has to be less than $3840, though.