I had noises getting worse until I took it in to a dealership here in Toronto, and they told me two rear wheel bearings and the prop shaft.
I had them two the wheel bearings ( they replaced the hubs, pricy ), but I had them hold off on the prop shaft as they wanted $1,300+tax CDN for it.
Mine is an '09 MT, been looking at RockAuto, NappaCanada, Dorman, as well as Subaru for the cost of the shaft, and prices are all over the place.
CanadaTire told me they could older a Subaru one for $650ish, or a dorman for $530ish ( need to find where I scribbled this)
Scarboro Subaru told me the part is $930 -I guess CadTire selling me a rebuild Subaru one?
Nappa has their own for $689 and over $1000 for the Subaru OE one.
I'm also confused because even when specifying a MT, there seems to be two lengths 63.25 " & 62.5" (nappa says both fit my vehicle...?)
Also where did you find a used one?