From what I understand, the retracts with functional scale struts will be $220. Depending on spinner interest, the cost will be less the more ppl that are interested of course.

Now, I did go back and look at the wing again and someone could put normal retracts in there by simply canting the retract housing a little as long as it wasnt a snug fit. But, the two sets of regular retracts i tried to fit(IE Robart 706RS and the 512RS were difficult). The 700 series is slightly too wide to even fit withiin the rails(but you could dremel out some space, but you'd have to do extra to cant the position some). The 510 series is about the same snugness as the 700 series, but could be made to work. The problem with the 510 series is they are only rated up to 12 pounds and going by the weight of the KMP of the same basic size(with less servos), that plane usually came out around 13.5 - 15 pounds.

Anyhow...the reason for getting a manufacturer to make gear is so you dont have to do any modifcations and i believe this is what some here have stated theyare looking for.
When i said regular retracts cant fit previously, i meant in the context of NOT modifying the wing or rails. I just wanted to make that clear.