The $135 is a pretty good price. The cheapest place I've found online is $125, and you would have to pay shipping both ways to and from Fremont, California.
Also, you are fortunate that the Apple Store has recognized the problem as a pinched cable and is willing to fix it as such. The official Apple remedy for this problem is to replace the display (at a cost of hundreds of dollars). You are the first person I've seen who says Apple will replace the cable at such a reasonable cost.
Check out the 90 degrees and black out!!!! thread, and you will see what a common problem this is.