I don't see why he would use this value as a basis for damages incurred though, since even someone publishing his photo without licensing it, hasn't taken (stolen) the photo from him. "Replacement value" has no meaning in this digital context.
In my opinion, there's no relation whatsoever between the cost of taking the photo and the damages he should seek. I think the damages should be correlated with the licensing value of the photo, majored appropriately for not acquiring licensing prior to using it.