With a refillable kit, you only pay for e-liquid and replacement coils, whereas with a disposable, you pay for a new battery and housing every time
The TSA guides on traveling with a vape state that: Battery-powered E-cigarettes, vaporizers, vape pens, atomizers, and electronic nicotine delivery systems may only be carried in the aircraft cabin (in carry-on baggage or on your person). That means that all vape devices (cartridges, mods, pens, batteries, coils, chargers, etc.) should travel in your carry-on bags or your pocketsnever in your checked luggage
Just note that aging cigars is kind of like aging wine, and eventually the organic compounds inside will break down to a point where they are not nearly as flavorful or balanced as they once were
The average length of Mods in tube is 8cm and its diameter is usually set at 22mm