M.B.
Hi S.,
If you want to check out this stroller, this one is basically the same thing: Baby Trend Deluxe Sit n Stand Plus. You may have better luck finding that in the stores (looks like Walmart may have it and RightStart - they have stores in White Plains, NY and CT - unfortunately the RightStart in Bridgwater, NJ closed).
I bought the One Step Ahead version for my sister-in-law when she had a baby and her other son was 2 1/2. They have a good demo on the website. This stroller seemed like the perfect solution for her (holds an infant carrier and - you are right - it converts for the older child to allow them to sit on a jump seat or stand). I looked at the Joovy Caboose and liked this one better. She says she loves it - but she says she loves all the gifts I give her. The one complaint I head from others is that the storage bin might be hard to get at. Good luck.