ChannelAdvisor (ECOM +0.7%) reports its clients saw 18.9% Y/Y eBay (EBAY +1.6%) same-store sales growth in August. That's down a bit from July's 20.4%, but above May/June levels and better than expected.
Surprisingly, eBay's auction sales rose 7.8% Y/Y after falling 23.3% in July and 17.2% in June. eBay's new Cassini search engine could be giving auction sales a lift. Fixed-price sales +20.2% vs. +20.3% in July, Motors growth decelerated to 18.5% from 26.6%. ChannelAdvisor thinks strong new car sales could be hurting used car sales.
Client same-store sales growth for Amazon (AMZN -0.2%) edged lower to 24% from July's 24.9%. That's a 12-month low, but still well above the 16% growth comScore believes was seen in total Q2 U.S. e-commerce sales (exc. travel).
Google's (GOOG +0.4%) numbers aren't great: search ad-driven same-store sales +0.2% vs. +0.6% in July, shopping engine-driven sales +7.7% vs. +12.9%.
Search ad clicks for client sites fell 3% Y/Y, and cost per click fell 6% to $0.50 (is mobile a factor?). But the average order value for ads rose 8% to $111.27.