I was actually on our hoist rope crew for awhile.
The standard budget is 1200 hours. In actuality it varies considerably depending on the digging the Shovel's in. In well-blasted Shale we can usually get close to 1500 hours. In Rehandle, especially in the winter with frost chunks the size of D11's, we have had operators report rat's nests after 6-700. Water logged patterns and Stonehenge type rocks do not seem to effect the Ropes as much as the bucket hardware. Our older version of this one, a 4100 XPB, has been known to go through 3x T&A's a shift ($6,400 CAD each).
What manufacturer are you using?