Answer: $10 per month
Step-by-step explanation:
$10 would be an ideal amount for me to pay to have access to the various social media sites if the major sites are on offer.
I think this amount reasonable because I do not use social media all that much but I would still like access to a variety of them. I would essentially therefore, be paying for my reduced time on the net.
Some might say that the companies might not make a profit if they charge $10 a month but I think they will because they make most of their money from ads so it would be good for them to offer the lowest subscription prices so that they can capture more people which will appeal to advertisers.