The value/cost of XRP has nothing to do with the value of the company Ripple - these are not shares in a publicly traded company. The value of Ripple is to do with the use case - if banks need to move (conservatively) $1Trillion per day across the Ripple network and there are only 100B coins - even if they were being recycled/transmitted across the network twice per day that makes each coin needing to be worth $5 - if on the other hand they get $5Trillion per day - then do the maths - as the banks use of XRP became more efficient they would recycle them more than twice per day - however you also have to account for the number that would be held by other people.

It is quite feasible - just on the use case alone that by the end of the year with only approx 50B tokens in circulation (max) at that time that this could be a $10 coin - without hype - just through supply and demand