I know the stuff I was buying for work last year for the lathe and mill was crazy expensive. Those tool inserts can run $5-$20 each, start buying them in 10 packs and, well, you get the idea:) Nice thing about running a shop for a bigger company was that I could drop a $1000 on tooling and no-one would even notice....fill out the order form, have the boss sign it, have the shop order it. Wish I could do that at home, haha!!!