In Harry Potter and the Philosopher's Stone, Chapter 6, Ron says:
You never get anything new either, with five brothers. I've got Bill's old robes, Charlie's old wand and Percy's old rat.
What I don't understand is why Charlie would give up his wand to get a new one. Since the wand chooses its owner, his original wand was already an excellent fit for him, and I seem to recall that a wand grows in power the longer it is in the possession of its owner.
The most common reason we see for wizards getting a new wand is that the old one is broken. But the wand was perfectly intact when Ron had it (before the Whomping Willow incident anyway). And as far as I can tell, there was nothing else deficient about the wand.
So if Charlie had a perfectly good wand that was already in tune with him and would become better as he continued to use it, why would he give it up and give a different wand?