Why is everyone selling to fence?

[husshh 1]

all his inventory slots are full because people wont stop selling guns to him. I  know prapor runs out of cash but just wait. sell to him once the timer resets. its better then having fence be filled with useless weapons no one will ever buy

[FeddyKen 15]

Peacekeeper, Prapor, Skier, they're all being emptied as soon as they are restocked. I tried to sell FOUR items to Peacekeeper upon the reset, and he went from some 500K USD to 0. I was given the "has no money" pop up.

So after some frustration, I feel myself and many others sold to Fence cause you can't drain that man.

[Ianwrym 9]

I just spam the vendors until they give me what I want. Even if they give you an error, if he has enough money to partially buy your loot mid-error, he'll still buy some of it.