Price for that has already been set. The Cost of retrofit ship is 500 badge if you grind them out. All you need to do is look in the C-Store to learn the cost of ship is 1200. That breaks down about 13USD or 14USD
People are not dumb STO could not charge more then the cost of Retro Ship. STO has tried to charge more and it has always failed. They got caught last time when they tried to sell the Extra slots only for 1 character when there champions MMO was selling the same thing per account. They changed it later to per account. I got them then. The same thing would happen again if they asked for more then the retro ship.