Usually the "buyer" is being paid to take it off the regulator's hands, so the actual price is negative. The token (positive) amount is to make it easier to dea

Usually the "buyer" is being paid to take it off the regulator's hands, so the actual price is negative. The token (positive) amount is to make it easier to deal with in a legal sense. Thus the bids are for the lowest subsidy instead of the highest price.