I bought the Swallow Beema Q from baby co around $399, it was in choice magazine as one of the best three wheelers and it fits down all shopping checkouts!!!! Everyone I know that has one is happy and it's quite compact to fit in the boot. My girlfriend was allowed to try the demo model in her boot as well. Hope this helps, I was also looking at the strider but it wasn't practical for us either.
Best of luck pram hunting!
Snoopea