Obviously, you start however you can and use the cheapo stuff until it burns out. Even if only wanting to do part time, there comes a point and time where you have to jump in with both feet and stop pussy footing around. Most Craftsman stuff is barely fit enough for a homeowner with a small and well cared for yard.
Having any piece of equipment go down will put you out of business and give your customers the opportunity to find someone else more legit.
Not having the right gear makes the job more difficult for any job and you lose money this way.