WTH No energy cost for individual devices yet?

Winter is coming, energy prices increasing… and I’m really staring to miss energy costs for individual devices as we have for mains costs.
At least to see how well my current automations are facilitating a cost saving measure.

This would hopefully enable budgeting run times of devices based on actual cost.
Seems to be possible, manual way, yet this should be automatic in the energy dash and use for automations.

[
Exclude complicated “edge” cases with own energy production et.al.
Mains energy cost + Device Consumption = Cost
]

Many requests on this already:

Duplicate. Please vote here: WTH!? - Why can't we see electricity cost for individual entities in Energy dashboard?