Plant propagation can take your gardening to new heights. It's the most economical way to increase plants in your garden, but more than that, it will makes plants available to you that are not available in your local nursery.
Propagation is a lot of fun. It's like having a hobby within a hobby. Your local garden center will support your propagation efforts. In fact, most of them have all of the supplies you need. If you find a special pass-a-long plant, you might even mention it to them. If it is well-adapted to your area, they may be interested in making it more widely available through one of their commercial growers.