If value brands of jeans aren't quite doing it for you, you still don't have to shell out $100 or more for your favorite brand. Instead, be patient and shop on clearance. Nearly every store has clearance sales or at least seasonal sales where you can get jeans for as much as half off or more. Start your search at these stores well known for their epic clearance sales.
Another option is to shop at thrift stores. You'll find a mix of all types of jeans brands with prices often under $20. It's not unusual to find the brands mentioned above for less than $10. When shopping at thrift stores, sizes aren't guaranteed, so it's sometimes best to shop in person and try things on.