Fishing cancun

Do any of yall reccomend any charters or fly fishing guides in cancun. The costs i have noticed online were $ 330-$ 550 for a four to eight hr excursion offshore and $ 250-$ 375 for a flyfishing guidebook. Is this reasonable? Do yall reccomend anybody for both of the two for around the very same cost? I will be there in the center of september for a week.

Thanks!