Bad idea.
I don't know your local laws, but that can be treated as theft if you quote/bill one number and charge another. If you're really willing to work with him again, charge him 100% upfront, or refuse to release the finished product until you have payment in full. If you want to be nasty, then you remind him he still owes money after he's already paid for this order.
Long story short though, is it really worth the hassle over a couple hundred bucks? Clients like that tend to have big mouths and can cause a lot of damage in the form of bad PR.
I don't know your local laws, but that can be treated as theft if you quote/bill one number and charge another. If you're really willing to work with him again, charge him 100% upfront, or refuse to release the finished product until you have payment in full. If you want to be nasty, then you remind him he still owes money after he's already paid for this order.
Long story short though, is it really worth the hassle over a couple hundred bucks? Clients like that tend to have big mouths and can cause a lot of damage in the form of bad PR.