Nashbar Kid Karriage - highly recommend
Just got this the other day for 89.99, currently selling for 99.99 but still a good buy IMO.
When it arrived, I was ready to settle in for some serious put together time. I was pleasantly surprised to have it pop together in less than a minute. I'm using it to pull a dog and I don't know that I would haul the limit of 100 lbs. but this is a decent deal.
Geez I see they have it on sale for 79.99 now. Combine that with a coupon and that is one really nice buy. Oh, and no, I don't work for Nashbar.