system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] How did Bellatrix Lestrange (or anyone else for that matter) reobtain her wand after escaping Azkaban?

I would assume, especially upon life sentence, that one's wand would be broken when one is sent to Azkaban. It just seems like too much of an unnecessary risk to leave a lifer's wand intact.

If wands are broken, another person's wand is not nearly as effective as one that fits just right for you.

So, 

1. is there evidence that wands are broken upon having a life sentence in Azkaban, and

2. how does one procure a wand after escaping Azkaban? Is there some black market version of Ollivander's?

I'm just so un-schooled in the ways of the Dark Arts. Please help!
gpt
Many of the Death Eaters who evaded capture appear to have been wealthy, I'd assume there's a black market in everything (there usually is).  One assumes part of the penance paid by those like the Malfoys was supplying the gold to equip the escaped Death Eaters with wands, battle potions, and other necessities.

Obviously high quality wands matched to their owners might not be so easily obtainable, but the escaped Death Eaters would be at least functional with any wand.

Later Voldemort captures Olivander, principally for his knowledge of the Elder Wand and the interaction between Voldemort's wand and Harry's, but presumably also to help the escaped Death Eaters get better wands.  Can't have an army without good equipment.