Wait a few days and you can buy them on CoinBase 
How can you be so sure they'll be added ?
To be fair, Coinbase did say they will be adding more Coins soon
Ripple is now no.2, it doesn't make sense if Coinbase does not add them
The thing is... being added to Coinbase won't necessarily guarantee it's going "to the moon." BCH was added to Coinbase and even after the 1k rise prior to being added, it pumped to 4k and has been garbage since. Don't get me wrong, I see your logic and I agree. But do we really think the Coinbase effect is really foolproof?