And that math is why the system is so brilliant. Over $1, SBD is chosen to be generated so that it can be sold. This increases the supply of SBD and puts downward pressure on the price. When SBD is below $1 people either power up directly if they want SP or they choose to hold the SBD for the interest. Both of these keep the supply of SBD in the markets low. The economics of SBD make the price trend toward $1.