Off all the repairs you can do yourself, this is the one you want to do. Easy. Also, L8includes the hardware. Save your money for the bigger more daunting jobs. This one is straight forward.

 

Yup. $250 and the odd bit of exhaust rust in your eye and it's done.

Are you confident using two wrenches (spanners)?

 

No matter who's propshaft you buy, be sure to lube it completely with NLGI #2 grease before installation.
The grease that's in the u-joint cups isn't for use in service, it's just for preventing rust and to retain the needle bearings during assembly.
I'm sure some builders do it, but it's better to be on the safe side.

 

That is a very good point that is never brought up enough

 

No, but only because you can do it yourself with new, probably better parts for half that.
Did you go ahead with it?

 

I missed this.
Yes, sounds about right for a shop rebuild using expensive parts, but is too expensive.
For less than that price you can get a very high quality (Tom Woods or Great Basin Rovers) heavy duty propshaft. For a good deal less you can get a lower quality, but probably still better than OE, propshaft.