wow i should have pushed much smaller chunks more often oops. shop selling added, shop buying quantity bug fixed(?) added lots of todos

+                            return Some(10u32)
+                        }
+                        // other item factors?
+                        Some((WeaponShopItem::weapon_from_item(w).price() / 8) as u32)

+                                    sold_item_handle.consume(amount)?;
+                                },
+                                // TODO: put a real error here
+                                Ordering::Greater => {println!("i can't believe you've done this.");},

         }
     }
+
+    pub fn get_sell_price(&self) -> Result<u32, ItemManagerError> {