It doesn’t matter if it’s cheap or expensive. If something does help you getting the job done a being consistent on it, then it’s worth its price.
Obviously we shouldn’t be tricked into thinking that by just buying something we will be better. They are, after all, tools, and as all tools we should be their masters. We should learn and refine the craft, admit our limits, improve upon what we have.
At the same time though we should think of what’s keeping us back, if a small investment can pay us in the long run, if it can add joy, pleasure, is it worth it?
I’d say yes.