Good morning, =) I just wanted to offer my two cents worth....I think you have the right idea looking on kijiji and other community boards. It might also be worthwhile for you to contact a couple of consignment stores and ask if they have a list that you could add your name to. Sort of a "call me if you get this item..." thing. LOL You could also try contacting your cities Parents of Multiples groups - they might know where to get this kind of equipment. And if you're lucky, maybe there will be a family who's outgrown their super stroller. =) All that being said, if it were me, I would prefer to use a triple stroller with the really big, jogging stroller style of wheels instead of a quad stroller. I have 5 little ones, and I looked at quad strollers too. I quickly realized that most of them have the small plastic wheels - no good in snow and slush - which we Canadians have on the ground for almost 4 months of the year. LOL The Runabouts are terrific - if you can get past the sticker shock - but they do weigh a lot by the time you get 5, 35 pound monkeys loaded up. What I do with my crew is the youngest ones ride, and the older two place a hand on each side of the stroller to ensure that they are always close to me.