Celaneo Avionics makes aircraft instrumentation. Its basic navigation radio requires​ $60 in variable costs and​ $4,000 per month in fixed costs. Celaneo sells 20 radios per month. If the company further processes the​ radio, to enhance its​ functionality, it will require an additional​ $40 per unit of variable​ costs, plus an increase in fixed costs of​ $500 per month. The current sales price of the radio is​ $280.The CEO wishes to improve opertaing income by $1,100 per month by seloling the enhanced version of the radio. In order to meet this target, the sales price to be charged for the enhanced product is ______.