estimated around 200 dollars is that reasonable? also not many people here work with epoxy.
That would be a deal if he actually recreated the structure -right weights of glass over/under the outer foam core, carefully aligned fix, good strong finbox install, coat of paint....
You will spend more than $200 on tools and consumables to do it yourself.
And it is not a beginner project.
To put it in perspective, I have been working with epoxy 7 years as a hobby, repairing and building boards etc, and I have just about the skills to try this repair.
But I don't want to, too hard. More fun to make new boards.
Also consider the fins, if you have the fins to go with it, get it fixed.
If you don't even have the fins, that is another $200-400 expense.
This could be your winter project and come out about the same cost as buying a used non-broken board. Or you could just buy something ride-able and get on the water.
By the way, brand of epoxy is not too important, but the cheaper ones are not always as good.
What's more important is knowing how the epoxy behaves.
This usually comes with practice.
It could be fun, but it's a bigger project than it looks.