I had really wanted to buy a cargo bike, but I have a small house and no garage. I already have four bikes in the house. I really can't afford another bike now anyway.
I did pick up a cheap used Safety First kids trailer on Friday. I met the guy at the grocery store, bought the trailer, loaded it with groceries, and rode home. It worked fine. It's got plastic wheels, and is only rated for 100lbs, but it'll do.