Last weekend my wife picked up a booster seat from a garage sale. The seat seemed reasonable and the price was $5.00.
After reading this topic I had a quick look at the seat and I was relieved to see a CSA label on it. I don't know when CSA started
labeling car seats but I think it is a good indication that the thing will probably be reliable.
Well, booster seats are a lot less integral to a child's safety. They're important for getting the belt into the right place, but they aren't responsible for holding the kid like a car seat is.