Q3 2018Q2 2018Q1 2018Q4 2017Q3 2017
Total revenues (MM)$56,576.0$52,886.0$51,042.0$60,453.0$43,744.0
Total revenue growth29.3%39.3%42.9%38.2%33.7%
Retail store sales (MM)$4,248.0$4,312.0$4,263.0$4,522.0$1,276.0
Retail store sales growth232.9%N/AN/AN/AN/A
Ecommerce sales (MM)$29,061.0$27,165.0$26,939.0$35,383.0$26,392.0
Ecommerce sales growth10.1%14.4%18.0%19.7%22.2%
Ecommerce sales % of total revenue51.4%51.4%52.8%58.5%60.3%
Other revenues (MM)$23,267.0$21,409.0$19,840.0$20,548.0$16,076.0
Other revenue growth44.7%50.8%53.9%44.8%44.5%

Notes:Other revenues includes third-party seller fees earned (including commissions) and related shipping fees, digital content subscriptions, and sales from non-retail activities, such as Amazon Web Services (AWS) sales, advertising services and co-branded credit card agreements; AWS sales were $19.3 billion, $17.5 billion, $12.2 billion, $7.9 billion, $4.6 billion, and $3.1 billion, during TTM, FY 2017, FY 2016, FY 2015, FY 2014, and FY 2013, respectively.