Craftsman Hollow Chisel Mortiser for $149.88.  Order online for in-store pickup at Sears to lock in the price, ensure availability, and save on shipping.  Otherwise, shipping is $47.00 for a total of $196.88 shipped.  Here is a screenshot for your reference.  It features adapter for bits of varying lengths, bit storage tray, four chisels and bits set, and a 2-1/4 inch riser block.