Luggage is one of those things that you need but you don't always want to spend a lot of money on. If you are an infrequent traveler, spending a lot of money for the right roller bag just seems frivolous. Your best bet is to buy discount luggage and you can find these bargains all over the place if you just look for them.
It's important that you buy high quality bargain luggage because you want to buy something that will last a long time. Make sure the pieces are made of good materials that will last. Pop into your local luggage store and see which brands appeal to you and then begin your bargain hunt!