I actually dropped skis/bindings years ago. I just cement/epoxy and screw my race boots onto 16 foot 2x4s.
and bindings are massivly important. You don't need to spend 3 bills. I get my favorite bindings(tyrolia peaks, perfect weight, super safe, lots of elastic travel or whatever) at discounts when they come up. On here, I scored some Peak 18x($240 or so retail online) for 155 shipped new from Ja. I got my new Peak 15s for about 165 shipped. Here is a list of good, safe bindings:Tyrolia FF/RF/Peak/mojo(mojo 15 and 18. I dunno if I would buy 12s). Secondly for me is Solly S912/S914, 914 Lab, 914 Driver/ STH 16 and 2010 STH 14(16 toe).
if you aresuper cheap, go to geartrade. About $100 for Looks, lots of options(other than FKS, the good looks..)
They do matter, but you can get good bindings for a decent price. I got 09 look px12 jibs for 100 new.