Replying to Old bindings ok?

So i just got a brand new pair of Chronic Cryptonites and my roommate has an old pair of skis he hasnt used in a while and he said I could take the bindings of his and use them if I wanted. They seem pretty good they are Salomon S912ti on his ooooooooooold teneighties. Pretty scratched up since they are so old but Ive ridden his skis before and they held up fine to me (ie no unnecessary releases or problems).
Is it worth it to use them or should I not risk puttin on something thatll break and instead just fork over a few hundo and buy new ones?