I just went to http://www.flightsim.com/ to see if they had any F-111's, nope, just textures for the pay-ware.
I've noticed on many occasions that when there is a very cool pay-ware aircraft no one seems to make the same aircraft in a free-ware download.
If it's popular enough to buy don't you thing that it would be a very popular free download.
I'm a tail-dragger at heart and some of the finest one's that I've seen have only been pay-ware and never duplicated for the free downloads.
I understand that a designer can't put as many hours (day's) into a free download as one can put into a pay download but you'd think that they would be trying to duplicate the most popular ones.
Professional courtesy, maybe but I doubt it.
I'm finished spouting off.