I don't know what to think either about the high price of SBD especially! But I hope it remains this way for a loooong time because I am loving it. Steemit is turning out to be one of the best things that happened to me in 2017 and I am going full force at it in 2018. Recently revamped and upgraded my blog... with earnings getting more serious, it's time to treat Steemit more seriously also!
My advice to you is to diversify a little bit. Take some SBD profits and secure them in other crypto's.. I'm not sure the high SBD price is sustainable since it's supposed to be pegged to the price of one dollar..
I put some into Doge and Sia lol
Its working out for me!