It appears you are correct, but it seems it was a change from early pricing models:
"It's a big change from the pricing model Google offered with Chrome OS in the past: The first generation of Chromebooks came with monthly fees for business and school accounts -- $28 a month per device for businesses and $20 a month for schools. With the new plan, organizations pay only the single flat fee for the lifetime of each device. "
"It's a big change from the pricing model Google offered with Chrome OS in the past: The first generation of Chromebooks came with monthly fees for business and school accounts -- $28 a month per device for businesses and $20 a month for schools. With the new plan, organizations pay only the single flat fee for the lifetime of each device. "
http://www.computerworld.com/article/2471845/cloud-computing...