I am exactly your opinion. SBD price is only that high because it is a small market and easy to manipulate. But my own logic says me that 500% inflation will have its effect. And if the price will get even higher the inflation rate will get higher too. Better to sell SBD and buy Steem. SBD will go back to 1 Dollar in the mid to long term. Steem could profit from that because due to the high SBD price autors earning more money for their post and use the SBD to buy Steem and use it for powering up. Here is a link how the regulation mechanism works as it is for me: https://steemit.com/steem/@sevenseals/why-the-steem-dollar-sbd-will-fall-back-to-1-us-dollar-the-self-regulation-of-the-sbd