Walmart offers the Graco Slim Spaces Compact Baby Swing in Alma for $55.99 with free shipping. (Amazon charges the same price for Prime members, but it will take up to two months to ship.) That's the lowest price we could find by $4. This foldable swing features an overhead toy bar, 5-point harness, and adjustable height.

Update: It's now sold out at Walmart but Amazon continues to offer it for $55.99 with free shipping. (Note that it will take up to two months to ship.)