My grapple is a 2 lid design, after seriously abusing this thing, one of the lids got terribly twisted. I went ahead and had them make me the 4 main ribs, these are about 19"x19"x2" and are 1/2" thick. This cost me $177 dollars. This was all done using the cad file they created 2 years ago,I had them pull up the file with all the parts and said make me four of these.They were done in about three hours.
Yes, they charged me for the original cad file when I first designed the grapple. I'm not sure what it cost me when I first built it but I think around $700, this was a 55" wide grapple with two lids, 1/2" steel for the lids and bottom tines and a ssqa plate. All hydraulics were extra. I just wanted to do the welding.
Don't know if I answered your question but the cad work was included in the price.