$($Managerial Economics$)$ You are the input procurement manager at Haven Pines Golf and Country Club, an upscale $7,200-$yard Par $72$ course outside of Salem, Oregon. For years, the signs at the tee boxes on each of the $18$ holes $($indicating hole number, par, and yardage from the various tees$)$ were made of wood, with plastic words and numbers glued directly onto the wood. These signs are deteriorating from weather and age.

Your supervisor has authorized you to purchase new signs, but given the overall aesthetic of the course, he has instructed you to order stone markers, each one cut into different dimensions, with the words and numbers carved directly into the stone. The supplier would then install the sign for that hole beside each of the $18$ tee boxes. Your supervisor also reminds you that the last time the wooden signs were purchased, the supplier decided to hold up delivery upon their completion, citing "cost overruns" until the golf course paid more money $($which it ultimately decided to do$).$ The supervisor does not wish for this to happen again.

How would you go about fulfilling this order?