That being said, 100$ IS a lot for a starter set (it may be fair, but it is also a lot).
That's the same price Warmachine, 40k and WFB are all that price. It is a lot of money to spend on a game, but it's not like it's unprecedented for a starter to cost that much.
It's possible that no matter how fair the price is that the market will not bear the cost of such a large, complex, high quality game.
Perhaps, but I trust that FFG considered that when they were making it. Considering how well they've done with their games so far, I feel safe in giving them the benefit of the doubt when it comes to making good and fairly priced games.
It's not like FFG is going to just accept the first idea pitched to them and not consider things like how well it will sell, or what the entry point cost is.