The PC-12 costs much less to operate than a B200 (and certainly even less than a 300)...so, hypothetically, suppose Mr. Airplane buyer decides he couldn't swing a B200/300 and because of the costs opts for a PC-12 but Mr. Pilot says, oh, but its not a twin engine...then Mr. Buyer says thank you Mr. Pilot, so if we really need two engines I'll get a 421, it costs less than a PC-12 to buy and operate and is a twin. Now what would "we" do? I know my answer. This reminds me of a company I flew for where I did my own unsolicited audit/cost benefit analysis where we were better off with a "lesser" aircraft. The manager went all slap happy saying "Finally, a pilot who isn't trying to run us into the ground by getting too fancy an airplane". (I guess he didn't get the bad pun on his part). I was only trying to ensure the longevity of my job.