Right now on Woot.com they have AmazonBasics Luggage Under $50! And if you have Amazon Prime it ships for FREE! I’m really impressed with the variety of sizes and colors that are included.
Here are just a few:
AmazonBasics Premium Expandable Softside Luggage Suitcase Set, TSA Lock $23.99
AmazonBasics Underseat Carry-On Rolling Bag $29.99 (I have a bag this size and I love it)