Less than $1000, as long as you enjoy the test-drive, should be a good price if there are no mechanical issues. These were recently close-out priced for $2999 to make room for a new Tin Lizzie 18 (the Artistic 18 is a rebadged Tin Lizzie). There were 2 versions - a forward-facing (like a Sweet 16) and a side-facing (oriented like a traditional sewing machine). The forward-facing is slightly newer, but not significantly different.
I don't know what Tin Lizzie changed in the new 18 sit down.
Michelle