Sadly, though, the damage is imperfect and the requirement is way high for a staff. There's no way this is worth 20K. Keep in mind mods don't add any value (hale, shelter) since most people will add their own mods.
My communing staff is hale enchanting, perfect damage and req 9. It halves casting time with a 20% chance, enchantments last 11% longer and health +20. It was 5K.
An imperfect staff with reqs that high would peobably fetch you about what you paid for it, I'm afraid
But by all means, if someone has a different opinion feel free to correct me