Let's pretend this picture isn't blurry, ok?
Take this outfit. I made the corset and the hat, and the skirt and shirt are from the thrift store. I happen to think it looks pretty darn good, and by making the corset and hat I saved myself easily $200. Keep in mind, I am not trying to say that sewing is cheap. For most everyday garments, you can spend more to make them yourself than to buy them off the rack at Kohl's or Old Navy. Fabric and supplies aren't cheap. However, if you want a really good fit, you can save money learning to do it yourself instead of paying someone else to do it.