From the ArcGIS Online blog, Esri has announced that use of ArcGIS online basemap data is free… totally free, and that includes for commercial use as well! From Esri… “As of the end of January, ArcGIS Online basemaps published and hosted by Esri are now freely available to all users regardless of commercial, noncommercial, internal, or external use. This means that you no longer have to pay a subscription fee for including ArcGIS Online basemaps in your commercial-use web applications.” There is a small restriction to be aware of though if you happen to be a high volume user – From Esri… The only restriction is a high-volume transaction limit of 50,000,000 transactions in a 12-month period, which is equivalent to 400,000,000 tile requests per year, or over 1,000,000 per day. See More Info HERE
