A 222k is worth significantly more than a 221k. It depends on where you are located and what condition the machine is in. In the UK they seem to for less, but in the US the regularly sell on ebay for anywhere from $800 to $1200 for models with North American (110V) motors in complete working condition and very good to excellent decal condition.
My machine is in excellent working order and in its original black carry case how much could I get for it
Around 300 bucks