Or pick it yourself. It is surprisingly simple on an old worn out lock (if it doesn't just turn when *anything* is put in it). Use a couple of paper clips. Unbend one. Use the other one to gently twist the cylinder towards the way you want to go - inserting it in the key slot opposite the tumblers (i.e opposite the side the toothed edge of the key would go). Use the unbended paper clip (it meeds to be fairly stiff - so maybe a 'large' paper clip) to poke in where the tooted edge of the key would go and repeatedly rake along the pins. Theoretically a lock needs to have every single pin pushed exactly right before anything will move, but reality is things are loose in there, and when you push a pin all the way down it will catch coming back up in the right spot and stay there. Do this enough and get all the pins stuck and the tumbler will turn. It just takes a little practice to learn the right amount of twist to place on the tumbler (too much and you'll lock the pins in at the wrong spots, too little and they will pop all the way back) and to learn the feel of the pins (are they pushing down - is the tumbler twisted too hard or not enough).

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I'm JohnMc, and I approved this message.