We finally have great goaltending for the first time since.... Belfour?..... Andersen for a bit maybe? and your suggestion is to let him walk because he's 31? I get the injuries are a bit of a gamble, but at 31, he very possibly has 5 good years left in him. This season isn't a fluke, his career numbers are solid, albeit a small sample. Thomas won his Vezinas at 35 and 37 remember. (I'm not saying he's on that level, just that goaltenders can go much longer at an elite level.)
He's clearly a notch above Woll, and with this team's style of play, I don't think we can afford to break up this tandem unless it's prohibitively expensive. I'd rather spend a few extra million on Stolarz to keep this 1A/1B combo we've got than splash an extra few million on UFAs. With the cap going up quite a bit over the next couple of seasons, I don't see why they can't make this work, although JT/Marner/Knies does complicate it.
Hildeby/AA are just too raw to count on, and if they do pan out well, the Leafs find themselves in a cup runneth over situation, which is never a bad thing.
If Stolarz puts up another elite campaign next year though, and we wait until UFA to sign him, yeah it maybe gets too pricey.
I don't know what he'd go for this offseason, assuming he has a good postseason, 5 x $4m? 4 x $4.5? His injuries have a silver lining in that it might encourage him to lock up the cash.