I have to agree with Easy Rider. Our local music store throws away a lot of guitar boxes so they are easy to come by. The last time I shipped my guitar I did the same thing I do with my pots..I doubled boxed it. 1st box had Guitar wrapped with bubble wrap >don't use styrofoam peanuts as items will shift< THEN I put it in a slightly bigger box with the peanuts. this method has always worked for me, and it doesen't cost much.