I was looking at buying a steelcraft side by side at about $280 new, so I wouldn't spend more than $150 for a 'very good condition, clean' 2nd hand one. Even that would be a stretch, but if it was hardly used and looked after, I would consider it, but more realistically I would say no more than $100..

I have decided not to spend the money on a new one now as DD doesn't like being in the pram much, so I will just get a 2nd hand one. I just need one for the times that I am on my own with the 2 of them, and when I had DD, I didn't intend to have another one so soon, and I cannot get a toddler seat for my pram

It would be worth looking at 2nd hand shops as well, as you can see the condition for yourself. Online, you could be deceived with photos (I know I have with some things).

I think there are 2 2nd hand baby shops in Strathpine, but not sure of any closer to you.