It would make sense that cutting edges would be a standard bolt pattern but they are not.
The 14LA 68" bucket uses a 716427016 cutting edge, held on by 280969 #3 plow bolts 1/2"x 1-3/4" long. The cutting edge seems to run about $450.
You might be able to get the cutting edge made by a place that makes heavy equipment cutting edges, but they are generally still pretty expensive. I am not aware of anyone offering a cutting edge for the 14LA buckets on the aftermarket.