Retrofit Question

[Greybeard]

I am trying to do a retrofit. The original design costs a total of 14.56k and the new design costs a total of 20.92k. This is less than a 50% increase in vessel cost. However the cost of the retrofit is more than 50% of the original cost.

The "failure notice" states that the there can only be a maximum difference of 50% of the cost. Does this mean the cost of the retrofit and not of the designs?

Thanks...Greybeard