Lets forget all about destroying a scientific work of decades just for fun; If you sell only 6 photographic safaris each year just because this particular lion permited turists to be at 10 m you earn about $29,000 each year. (I think that just doing 6 photo safaris in a single year is a ridiculous low and ultra-conservative estimate).

Multiply this for the last 13 years and you'll have earned at least 375,000 dollars (If we assume only a single jeep and tour-operator doing business in the park, something that is false, obviously). Just a pale shadow of the real monetary value of the animal. Is not unreasonable to asume a damage over the million dollars here.

So if we cry for starving people, this single animal has been feeding african toddlers and their families, for its entire life and could continue doing this for other 3 or 5 years maybe, except because it was killed, just for fun, and his head is converted to a valuable object that can be re-selled maybe tomorrow. For the hunter's point of view, is an investment.

I also want to do some charity. Will you sell me the liberty statue for a 0,01% of its real value please?. Hey, is for a good cause... be richer. I'll give valuable facebook likes to the poor starving children of Minessota also. I promise.