code: function applyPrecision( cost, precision ) {
  	const exponent = Math.pow( 10, precision );
  	return Math.ceil( cost * exponent ) / exponent;
  }
docs: Applies a precision to the cost
  
  @param {Number} cost - cost
  @param {Number} precision - precision to apply to cost
  @returns {String} - Returns price with applied precision