You wouldn't be paying for electricity, you would be paying for the convenience of having the fast charging, as well as the cost of putting up the chargers.
+1
When asked how much they want to pay for a QC - they say either "free" or "no more than what it costs to charge at home". These people completely fail to realize the costs of providing said infrastructure and apparently think it costs nothing to install and maintain.
We see these sorts of arguments about QC all the time on mynissanleaf.com forums. People for some reason have a severe adverse reaction to paying more to charge (and often paying anything at all) in the public than what they pay to charge at home (and ignore what it cost for them to install their home charging station) when the harsh reality is that they are comparing apples to oranges.
Even the $50k that Yggdrasill grossly underestimates the installation cost.
Let's look at an example of what it costs to install a Blink dual-port 50kW CHAdeMO QC station:
Station itself: $50-80k (don't know exact price, but have seen $80k quoted for the Blink and $50k for a single-port QC station)
Installation: $10-50k depending on trenching and available electricity
OK, we have a range of $60k-130k just to install a single station, but for example purposes lets assume that it only costs $50k to install.
Now for operational costs - utility demand charges $10-$25 / kW demand charge depending on the TOU schedule in addition to paying $0.05/$0.15 / kWh for energy. So if you have a single station which gets used at least once a month, you're going to pay somewhere between $500-1250 in demand charges on top of electricity which will cost $1.25-3.75. Don't forget that you'll have to nearly double those demand charges and electricity cost for a 90 kW capable Tesla supercharger, but let's stick with 50kW for this example.
Again for simplicity, let's assume that you incur a flat $1500 / month in utility charges.
And let's assume that one is willing to pay $4 for a 30 minute QC session which delivers 25 kWh since that's a number that someone threw out that they'd be willing to pay ~$0.15/kWh - so just to break even on utility charges you have to serve 375 QC sessions.
So how many QC sessions is a single station (even a dual-nozzle station which can instantly switch cars to avoid downtime between charges) might we expect it to service? On weekdays, there's likely some peak periods - mornings, lunch and evenings - weekends it's probably spread out more evenly, but reasonably one can expect typical use to fall between 8am-8pm and very little outside of that area. That's a maximum of 16 charges a day, but people don't want to have to wait, so it's likely half that number, or 8 charges a day. At $4/charge that's $32/day or about $1000 / month and you are losing $500 / month on utility charges never mind that you're still paying off the install costs. It appears that a 50 kW 30 minute session will need to cost around $7 to break even and perhaps turn a small profit - coincidentally that's what the QC networks that are popping up are charging.
Feel free to tweak these numbers to make your own case, but it's pretty clear to me that these things need to happen to provide a truly useful and sustainable QC infrastructure:
Each site is going to need a number of stations for a couple reason - to minimize wait times and to help manage demand charges. These stations are going to need to be smart and communicating to limit the total electrical demand for the site. For example - install 10 50 kW capable QC stations, but limit total site demand to 200 kW (equivalent to 4 chargers running flat-out). Each station adjusts output such that total demand does not exceed 200 kW. Prices will have to vary depending on demand - charging during peak times should cost more than charging at off-peak times. If you want an exclusive QC station reserved for your use at maximum capacity - be prepared to pay dearly for it - often more than what it costs to drive the ICE.