During an average month, Space toys plans to sell 125 units each of its standard and its deluxe product. Budgeted contribution margins are $175 and $250 per unit, respectively. Of the total actual sales of 260 units, 128 units were of the standard product. Determine the sales mix variance. Enter favorable variances as a positive value and unfavorable variances as a negative number. Do not enter $ sign or commas.