Sources:
www.digitalcommerce360.com/2017/01/26/valentines-day-increasingly-mobile-holiday
nrf.com/resources/consumer-research-and-data/holiday-spending/valentines-day
www.fundivo.com/stats/valentines-day-spending-statistics/#
www.entrepreneur.com/article/288417
blog.justuno.com/valentines-day-marketing-strategy-ecommerce