daylight robbery

a daylight / highway robbery — грабеж средь бела дня; форменная обдираловка; чистая обдираловка; откровенный, наглый грабеж (перен.)

a (real) rip-off

Example 1: What that plumber charges is daylight robbery /a real rip-off.

Example 2: It's not a fee — it's daylight robbery/a rip-off.

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daylight / highway robbery isn't used to describe actual robberies — whatever time of day they might take place. It is a figurative phrase that associates an instance of unfair trading with actual robbery. (phrases.org.uk)

[обдираловка]