This is a really open ended question. Maybe give us some parameters, like about how much you're looking to spend, what type/size of bag you prefer to carry, etc.
Do you have a TJ Maxx or Ross Dress for Less near you? Burlington? Places like this carry bags that are decent quality marked down a great deal. That's where I did a lot of my bag shopping when my budget was under $100.I have a budget around $50. I just need a bag for school. A bag that's big enough to fit in some books..