So in the game you repair D-mods by paying a very high amount to return a ship to its original pristine form.
What if you could repair it over a very long period of time for a lower price?
So if you got a D-modded ship that you wished to repair it would go over a series of calculations which would determine how long it would take to repair, 6 months to a couple years.
You would still have to pay a much higher amount then if you had to buy it off the market, but it would be around 2/3 to 1/2 the price.