Look its simple.
If you can afford or need to because of a disability then buy TiR, if you don't like it sell it afterwards.
If you like to build stuff then make one yourself
If you want to use a mouse, cat, dog, armadillo to look around in IL2 then fine.
Its all do with preference, personally I tried TiR it worked fine in MS flight sims up to FSX and other programs I use but not too good for
me in IL2.
Its a very expensive piece of hardware for what it does IMHO but if you feel it's a necessary piece of hardware then the cost wont worry you.
So.......... buy it try it don't like it sell it.
Have fun