rrr_oh_man is claiming that wholesale fixed rate electricity is generally cheaper than varible rate domestic electricity. Or that the wholesale-bit is higher order than the variable rate-bit. Not that it's a big issue, bob1029's point doesn't actually care about one situation being wholesale. It's just a somewhat narrow, (in this case) inconsequential, but also valid, nitpick.

I didn't express myself correctly.

The analogy is false.

Domestic electricity is priced per kWh, wholesale electricity is priced per kWh, the latter is, as a rule, cheaper. It is not fixed vs variable rate.