New York (CNN) — Black Friday once again proved that Americans are willing to shop when they spot bargains.

Mastercard reported a steady 4.1% increase in US retail sales on Black Friday and Adobe Analytics said online shopping surged by 9.1%. Salesforce expects Cyber Monday sales to also climb by 4%.

All of that is a pretty solid showing, given the gloom and doom in economic polls, crumbling consumer confidence and mounting frustrations over the cost of living.

However, beneath the surface of those strong headline numbers lies a disturbing trend: Americans are spending more but getting less.

Although overall US online shopping increased 3% on Black Friday, it was driven by a 7% jump in the average selling price, according to Salesforce.

Order volume, which measures how much was

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