E-commerce is great for a lot of things — snagging sales, stocking up on staples, buying stupid stuff we really do not need. But people's voracious appetite for online shopping does appear to ...

Costco Wholesale Corp. on Wednesday reported a 9.9% year-over-year sales gain through the final stretch of the holiday-shopping season, marked by a big jump in online sales.

Mario Tama / Staff / Getty Images Holiday retail sales rose 3.8% year-over-year, topping earlier estimates with a boost from online shopping, according to Mastercard. Mastercard's SpendingPulse ...

Holiday retail sales rose 3.8% year-over-year, topping earlier estimates with a boost from online shopping, according to Mastercard. Mastercard's SpendingPulse survey showed online sales from Nov.