I have a Logitech G940 but it will not play nice with Jane's F-15 (Throttle won't work) I can calibrate Mil thrust in Jane's F-15 but as soon as I start playing the game the throttle is non existent and the throttle keys on the keyboard won't work either. Is there a cheap joystick somewhere out there that works with F-15 and Win 10 64 bit?

Don't know for sure, but probable Jane's F-15 recognized only one stick. G-940 is 2 or 3 devices for Windows/games.
There's a list joystick supported by games buried there in one of this "technical" forums.

Look at Tm T.16000M or VKB Gladiator as "Jane'stick".

EDIT: Yes, is the case, Jane's F15 support only one joystick.

List there http://SimHQ.com/forum/ubbthreads.php/topics/3520960/Re:_Master_list:_sims_with_mul
Moderator: can pine this list?

Using VJoy + Joystick Gremlin (PITA for install/configure) you can combine G-940 controllers as one virtual device.

I run Jane's F15 on a netbook. Could play with my X-52 pro out of the box and with no drivers. I Didn't do any further tests however.

Ok im back, and it would seem that mapping works too, though in F-15 is kinda unconvetional.

PPJoy is not so difficult to configure and will merge G940 into one virtual joystick.
A little tricky to configure and understand but can be done.