A question regarding volatility in sending ETN


Who knows whats the solution for volatility in sending ETN for someone?
For instance, an ETN costs 1$ and you will supposed to send to me 10 ETN in a real purchase on my online site, how do you now when I receive 10 ETN, it costs 10$?


Sometimes is will be more, sometimes less, on average you will get 10$


Well, do you think such system can compete with transactions platforms like Paypal and so on?