Just keep them clean and brushed, regularly take a brush through their hair, if done properly this willprevent matts from forming and help keep their need to visit a profesional down.
One thing you can look in to is learning to do the grooming your self, there are many groomers who would be happy to show you how to groom your dog, so this one off cost could be well worth it.
Cheap clippers will work for just your dog, but make sure you look in to how to clip them properly, if you want the breed cut it would require more then just a puppy cut.
Also, I urge you to think about the grooming requirements before you purchase or adopt a dog in the future, as part of your animals wellbeing grooming is a basic need, and neglecting it is cruel. It is possible to take care of grooming your self as an owner, but this is something you should look in to before getting the dog, as it could be time consuming and you should be able to schedule these things for your dog.