A great amount of really great leatherwork (tooling, stamping, carving) has been done with all kinds of tools; home made, cheap, expensive, etc. Good tools may help, but the main thing is how you use the tools you have. You don't need 100 different stamps. 10 stamps in total may provide all you really need tool-wise. Practice and patience are the requirements for good tooling of any style. Of course we all like to have nice tools, and there is always another one that we want to add to our collection, but this is mainly just "wants".
Tom