Even thought you might sell 1 da 200 for every 10 or so DA 75s, you could still profit more from a 200. If it was a $500 profit selling a da 200 where as the 75 is going to have to be marked down a lot because of the ZDZ 80 (another reason to not bother with a 75) say $200. (I have no idea how much they actually make per engine, just totalling guessing). They would have to sell 3 DA 75s for every 1 DA 200 where it would be a lot cheaper and easier on them to make a single 200 rather then 3 da 75s. Its cost vs mass production and I dont recall the exact algorithm used to get maximum profit for minimum product.

DA 75 - ZDZ 80 is already out for $615

DA 200 - ZDZ 210 is already out