Al: "Dear Tim and Al, my wife says I spend too much money at the hardware store. What percentage of our budget should I spend on tools? Signed, Confused in Lansing."
Tim: Take your entire budget, subtract your house payment, if there is one, utilities, phone, add up that total, and forget about it and buy whatever you want, huh? Ha-ha!
Al: Remembering to leave a little aside for your future divorce lawyer.