Amazon rides Prime Day to a big July

Third-party sellers' "same store sales" increased 30% on Amazon, a four-point rise over June. Sales on eBay and other online marketplaces declined

July's Prime Day online shopping event continues to rack up favorable metrics. This week's come from ChannelAdvisor, whose July "Same Store Sales Report" for third-party sellers had its Amazon receipts up 30%, a four-point rise over June. ChannelAdvisor's same store sales (SSS) numbers indicate year-over-year changes in the gross merchandise value its clients move in online marketplaces.

Amazon's strong July resulted in poor numbers for competitive online bazaars. eBay's July SSS dropped to 5.8 from 7.2% in June, and other marketplaces dipped to 16.1 from 19.2% combined. Google Shopping/Product Listing Ads dropped from 28.7 to 13.2% in the period, while other comparison shopping engines fell to 4.3 from 15.8%.

More than Prime Day figured into Google Shopping's decline in July, according to ChannelAdviser. Budgetary adjustments made by marketers responding to skyrocketing cost-per-click rates likely played an equal role. A charting of CPC rates for keywords on Google released last month by ChannelAdvisor showed them rising from six cents in June 2014 to 26 cents this June.

This article first appeared on

Subscribe today for just $116 a year

Get the very latest news and insight from Campaign with unrestricted access to , plus get exclusive discounts to Campaign events

Become a subscriber


Don’t miss your daily fix of breaking news, latest work, advice and commentary.

register free