You can't beat the price, and it sounds like it's in better than average shape. This would be the same as a KDP22, if KA had made such a model, and only lacks the sanitizing option of the KDS22.
This DW was built by WP the 4th week of 1991, this was a very popular model from ISE it is similar to a KDS22 without several features like the Sani-rinse option.