By the way, you are taking a big risk buying XRPs at those rates. XRP was once at 10,000 XRPs per 1 btc and then dropped to 140,000 XRPs per 1 btc. Now, it breached the resistance at 10,000 XRPs and no one knows how high it can go. But once it starts dropping, it will drop back to 20,000 XRPs very fast. And won't stop there.
Thank you for very helpful input!
It looks I need someone who is well trusted in the forum and have plenty of time to do this stuff. Not an easy job.
Regarding the up and downs of XRP/BTC, I guess bitcoin's fluctuation in recent months contributed the bigger part.