This proposal sets the minimum fee for an order for a single block via the on-demand system to be 0.005 KSM. The reason for the change is to set a starting point that is high enough to deter spam but low enough that experimentation would not be cost-prohibitive.
If this minimum is found out to be too high after the on-demand system goes live, another proposal to lower the base fee should be proposed.
Note that the proposal has been submitted on the Whitelisted Caller track, meaning the Fellowship will be also voting shortly to whitelist the submission hash.