The most costly fabric does not mean it is the finest.
To make your reupholstered chair look okay, you do not need to buy costly fabric. You can cheaply purchase a perfect pattern quickly and make it look brand new. One reason you want to steer away from more expensive fabric is that you're going to pay a lot more than you need to on the material.
Think about it; you would quickly pay more than you can on a new chair at the supermarket if you spend about $10 on any yard of fabric you buy. But this depends on the piece of furniture you work on; some furniture needs a lot more material than others. When you are looking to save a few bucks, think about your budget and do the math.