What do you think a reasonable price for a ripple would be?
Almost nothing. It's a closed source transport media for crypto currency. It has no 'value' in itself. Well, except when I want to sell the ones I get in the giveaway of course.
The notion of value is subjective. Things have value because we value them. If the ripple network becomes widely used, then XRP will retain some value most likely. Right now, XRP are in demand and so they have value because people are willing to pay for them.