I suspect it will get cheaper, esp for the common case where you don't need to upgrade the service to your home, and there's already a panel/subpanel present. The cost is mostly labor, and in that case it can be installed in a couple hours or less. Also, 30% of the cost is already subsidized as part of the IRA. As EV prices become more competitive, such that having the outlet/charger installed in their garage is an actual burden for the ppl buying EVs, I wouldn't be surprised to see this subsidy increase