I s'pose they only break if you get caught where you shouldn't be.
For five seasons I've only bought used masts and had a heap of fun on them. The change to new ($300 NP X3) was due to 2nd hand mast snapping when downhauling 5.4 hard on a cranking day (in hindsight, it was on it's way out anyway, "one more session then I'll spend the dough...")
I would have gladly paid $300+ on the spot for a new mast to get out there.
Horses for courses?!

$300 worth of fuel would get my mate's boat out only a few times...