I think QB's make about $350,000 in the CFL.
Tebow might end up there, but he won't be happy.
I just looked it up. The top contract was around $500K last year. I think Tebow's star power would get him that, at least. But yeah, not what he'd hope to make in the NFL at all. I don't know if money is a big driving force for him, but I do think the Tebow brand is. He'd raise the profile of the entire CFL, but Doug Flutie did that to a certain extent, too, and most Americans didn't really have a clue about what he was doing up there.
And yet, Tebow is different. At the very least, I suspect his games would be broadcast in Florida. I don't know, I think three or four years up there starting, honing his craft, still being relevant in his home state... I think that all works for him. If he can continue to "just win" up there, I bet he could come back and get a real shot.