You would just pay about $229 for the cheapest NEW one you can find. You will be throwing away money on a used GE or any brand dishwasher because usually the tank, the seals, or the motor will wear out. A used dishwasher is one half way thru its life of service. A new one will work for about 14 years. If you do not have the money now, continue to wash dishes by hand, and save up till you can buy it.
Try the completed listings on EBAY