Cecil, how much profit is there in selling for $75. If you don't wish to share, I understand. Just seems like a lot of work to produce such an amazing fish...
What work? It's like throwing feed to chickens once a day!
Now you are being exceptionally modest. That is like me as a farmer saying growing a corn crop is easy. Just throw some seed and fertilizer out there and you have it!
I would say your level of knowledge and expertise gained is not something "easy" for everyone to replicate.
You did a great job that few can likely do. Certainly not me.