How would you estimate revenue from a free service with premium content?

Hi, the title says it. I would like to create an entertainment service, where people could optionally buy additional content for various prices once per a period.

Any idea how to estimate what percentage from the total amount of users would buy premium and how much would they buy?

Does anyone have any stats from anything similar?

Thanks for any help.

from General Business http://ift.tt/1Ngko4S
via IFTTT
Previous
Next Post »
Thanks for your comment