Brother LS2125I 10-Stitch Sewing Machine with Automatic 4-Step Buttonholer for $58.99 shipped.  Here is a screenshot for your reference.  It features 10 built-in stitches, including blind hem, zigzag and stretch stitches as well as automatic 4-step buttonhole feature to create custom-sized buttonholes to fit your specific buttons.  Most places have it for about $78.