The search for a "new" pressure cooker

So after returning to Bozeman after the holidays I made the tragic discovery that one of my roommates had blew out the safety valve of my stove top pressure cooker. For those of you not familiar with the wondrous invention of the pressure cooker...let me enlighten you. Basically it's a very large heavy pot with a lid that is sealed on. You add food (often veggies) and a little bit of water and heat it on the stove allowing pressure to build up inside. When the pressure reaches a certain point it starts jiggling a little gauge on top and the result is delicious. Apparently it's something only myself and grandmothers cook with, but I love it and used it all the time (ask any past roommate of mine). Anyways, because it can be mildly dangerous it has a little plastic piece that is made to blow out if the pressure gets too high so the entire thing doesn't blow and that was what broke, making it unusable. So I've been researching online and it looks like my beloved cooker is unfixable so thus I've hit the trift stores of Montana in search for a new one. I feel like it's one of those random items thrift stores should carry, but alas I've been unsuccessful. I've also put a want add on freecycle an online classified page for free stuff people are looking for or giving away, but that too has be unsuccessful. I think my next option will probably be ebay where I have seen some for sale that were used or "vintage" as the ebay people like to advertise. As convenient as online shopping is, I'm trying to buy things locally if at all possible to limit on shipping and the carbon emissions that creates. So I will give it a little bit longer before I begin any bidding. Until then I guess I will have to resort to new ways of cooking. So far my 16 days of consumption-less living has been rather easy, now that there's actually something I want things are beginning to get a bit more interesting.