It also operates a physical store in South Auckland, using the name Super Mobile, which offers layby sales.
"Bestdeals failed to comply with the disclosure requirements for layby sale agreements under the [Fair Trading Act]."
In particular, the Commission said Bestdeals failed to provide its customers with a copy of the terms and conditions when they entered into a layby sales agreement.
It also breached the CCCFA by failing to disclose key information.
"Bestdeals did not give consumers an accurate statement of their right to cancel the contract, their right to apply for relief from unforeseen hardship, or the details of the number of payments they had to make. "
The Commerce Commission has prosecuted nine mobile traders this year, including Ace Marketing Limited, Smart Shop Limited, Goodring Company Limited, Betterlife Corporation Limited, Flexi Buy Limited, Macful International Limited, Zee Shop Limited and Sales Concepts Limited.
The District Court has imposed fines of almost $510,000 on the five mobile traders sentenced so far this year.
In August last year, the Commission published its mobile trader report after a year-long investigation into the industry. It found that 31 of the 32 mobile traders identified did not comply with all of their obligations under the FTA and CCCF Act.