Is it a lot of money? Yes. Is it worth it? Depends on the player I guess. To me this thread is less about what you are getting and more about how much it costs. I believe the intent of the OP is more of a "reward does not meet the difficulty" than a " /stamp foot I want it NAO! " complaint. I agree that this is a money sink to get more gil out of the economy thinly disguised as a reward. I am fine with that.
Now to address money complaints. Go level a miner or fisher or botanist. Sell stuff. Its really not hard. Even iron ore, a lvl 15 harvested item, is needed by high level combines (cobalt ore + iron ore = cobalt ingot). Really, when people complain about not having money it blows my mind.