As the demand for luxury advent calendars rises, shoppers are being warned about increasing online scams. Space NK has specifically alerted customers to fake ads on social media promoting its sold-out £250 advent calendar at steep discounts. The consumer group Which? advises vigilance against deals that appear too good to be true, noting that scammers often target these high-value items during the holiday shopping season. Experts recommend carefully checking website URLs and reporting suspicious sites to the National Cyber Security Centre to protect against fraud.