Hi Hattie, the Artista 200 was the TOL (Top of the Line) Bernina until they introduced the 730. At that time, Artista 200s could be upgraded to a 730 and now have the BSR for free motion and a USB slot for transferring embroidery designs. If it has that upgrade it would be worth a higher price. That said, I have seen such upgraded models in the $2200 - $2800 range. Without the update, probably $1800-$2200. A lot depends on what extras are included such as feet, embroidery supplies, ect. In your case the cabinet is definately an extra. Newer cabinets witn an air lift (Koala, Horn, ect.) are expensive new. You would also want to ask the serial number as that will tell you the age of the machine *first number =decade (1=70s, 2=80s 3=90s, 4=00s) *second number= year within decade. So for example, serial beginning 45xxxxxxx would be manufactured in 2005. Ask if it has been regularly and recently serviced.
It's difficult to give an estimate without knowing the exact machine. My friend has one one upgraded to 730 and she loves it. I have a 440 and love the quality of Bernina embroidery. Lots to consider!
Kim