Not really sure what start up costs would be I inherited most my tools. Ive been ordering tooling leather from leather unlimited a large double shoulder is about 90 bucks. A good pair of heavy duty scissors, I use a th9nging punch to cut the holes then some heavy wax thread and leather needles. To tell u the truth hobby lobby has about everything to get u going. After aawhile u may want a tool or something they dont have and u can get them at tandy leather( expencive but they have everything) or I like leather unlimited there cheaper but not as much stuff. Utube videos help a bunch too and read thr leather working forums. I just started doing holsters a few months ago I just like working with leather. Check out leather stores and try to make the products u like ive dont that alot like business card holders. Firefighter suspenders stuff like that its great practice.