If you find you really love making jewelry, it is probably wiser to replace your less expensive tools when they start to wear out with higher end ones, or at the very least, try a tool a grade up from what you are using to see how the handle grip and the spring tension work for you. Take a class and look at the tools other students, as well as the instructor, are using. Most students and instructors will happily allow you to check out how they feel in you hand. But be aware, their tools may be expensive and they may not want you to work with them as they do not know how well you will take care of or handle them.
If you have arthritis or carpal tunnel syndrome, you may want to check out pliers in the next level up price range-closer to $15 each, as they have softer and/or more sculpted handles. There are many ergonomic pliers on the market in that price range.
Of course, if you KNOW without a doubt that making jewelry is something you will continue to do for years to come, or you will spend a great deal of time working with your tools, or money is no object, you may want to invest in a quality set of ergonomic tools right off the bat.