Affluent consumers are 40 percent more likely to make a purchase on a luxury retail Web site compared to non-affluent consumers, according to new data from Martini Media and comScore.

The U.S. Thanksgiving holiday is quickly becoming a shopping phenomenon as international customers are spending more each year Black Friday through Cyber Monday.

International consumer purchases at U.S. retailers tripled Black Friday through Cyber Monday, according to data from FiftyOne Global Ecommerce.

Retailers are projecting a 3.1 percent increase in sales on Black Friday and a 4.3 percent increase in Cyber Monday sales, according to a new survey by auditor BDO USA.

High-end retailers kept pace with mass-market brands to stake huge sales figures this holiday weekend as consumers shelled out more than $45 billion, including historic revenues online.

Luxury retailers should plan a more concerted ecommerce push this Thanksgiving weekend to capitalize on the expected major growth in holiday sales, according to consulting firm BDO.