Tube beading is one of those things that you can learn how to do for yourself. There are kits available and all kinds of instructional videos for it. Many of us are inclined, when presented with such choices, to go the DIY route, and that's perfectly legitimate. Why would you want to pay someone else to do something that you or your employees can learn how to do?
In the first place, any time you learn a new skill, you have to understand that perfection will not be reached immediately. It's a learning process. You'll need to set aside time and materials, and while some of the first attempts may be usable, some may not, and your first projects will almost certainly take much longer than an experienced person's projects would. You may decide that you need the service to be in-house, and dedicate the time, energy, and money into having you or your employees learn to do it, but it's important to be aware of that cost.
Even the lower end equipment for tube beading can be expensive, and the harder the material it is, the more expensive the equipment will get. You will also have to maintain and repair or replace the equipment. Again, this may be worthwhile, depending on what your business needs, but it absolutely needs to be part of your decision-making rubric before you make the final decision.
Tube beading services will be able to offer you either ram form or internal roll form types of tube beading. They both have different applications and uses, and will be able to help you make a decision on what makes the most sense for what you need. You also can find services for most types of tubing and most sizes, where as any kits you get for this will be a bit more limited in what they can handle. This may be fine for what you need, or it may be really limiting. Most companies that offer tube beading services also offer other types of tube and metal work, which means that as your business grows and your needs expand, you'll have an established relationship with the company you need to help you meet all your needs for tube and metal work.
In the end, this is a decision that only you can make, but it's worthwhile to look over the facts and be sure of what is best for you.
For more information on tube beading, contact a company like Accubend Inc..