A.S.
You can find used Ergos on ebay for cheaper. They are MUCH more flexible and you can use them for newborns up to 2 year olds and much much more comfortable to wear. Another good option for an older baby (prob once they can hold their head up) is a mei tai, it carries similarly to a Bjorn. Ring slings are great too but I always found I had to fiddle with them too much. The babywearer is a great site to go to in order to learn about the different carriers.