Clearly the Bergeon tools are amoung, if not THE best. Yet, you can spend substantially less and still have a very good set of screwdrivers. There is a nine-piece set made in France that are just fine for starting. They come in sizes 0.60mm to 3.0mm with changable blades. Many suppliers carry them, but here’s a link just for you to look at:
I hope this helps.