I got mine of ebay - it was the AT3 or whatever you call it. As a stroller it's fantastic, and it large enough to take two cavaliers easily - in fact, I'd go as far as to say it could take all three of ours easily with a little room to spare. They squash up so! On the down side, the net/holed canvas stuff is not impervious to determined clawing and biting. I've had to find ways to - er - reinforce mine, shall we say. But otherwise it's brilliant - I even had one mother looking at it enviously as I collapsed it and she said she wished her baby buggy went up and down as easily! It cost me about £90 altogether including shipping from the States.