Everybody who invest in ripple can go to this website an sign a petition to make it on coinbase. My guess is that prices will increase when ripple becomes easier accessible to public and this is one of the steps there
https://www.change.org/p/coinbase-petition-for-xrp-ripple-on-coinbase-e01c1b86-79c0-4e14-a026-9cdc1d5e76ba
