A "good" price is subject to one's budget. I would think a fair price would be from $250 to $350. What makes it nice is it's not inscribed. I seen one sell recently at a major auction for over $600 but that's entirely too high IMO and was pre-certified PSA/DNA.
Too high. IMO. I may be out of touch though. I've had several opportunities in the past six months to purchase Superman signed photos at the $250 level but they were inscribed. Perhaps someone who handles Reeve could suggest current prices more accurately.