Shops in Cork, Donegal, and Dublin have also been found in breach by the CCPC.
An Offaly company is being cited for breaking consumer law.
Midland Retail Investments Limited, trading as Leavy's Centra in Tullamore, was found to have failed to display its product prices in store by the Competition and Consumer Protection Commission after an inspection in December.
The shop's owners have been hit with two fixed charge penalties along with a group of other retailers who were found guilty of the same offence.
Meanwhile former MMA fighter Conor McGregor, and influencer Suzanne Jackson of SoSueMe were both issued separate compliance notices for not disclosing the commercial nature of content posted on their Instagram accounts.
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