Sears offers the Craftsman Bolt-On Router Attachment, model no. CMCMTR, for $19.99. Opt for in-store pickup to dodge the $6.50 shipping charge. That's $20 off list and the lowest price we could find. This router attachment operates at up to 9,000 rpm and has a maximum router depth of 1".
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.