The top U/J comes with the shaft, the bottom one on its own. Both are around 30.00 GBP + vat over here but sterling is weak so probably a good deal for you.
They don't look like they can be rebuilt and I've replaced both in my time. It's a difficult job on a V8 with tubular manifolds / headers as there's very little clearance. The starter is close as well so best to disconnect the battery if you don't want to weld a dropped spanner to one of the terminals.
If you mark the splines / joints at the steering straight ahead position before you start you shouldn't have the steering wheel at a strange angle when you finish, like I did the first time.
Adam
TR7 V8 DHC Jaguar Solent Blue. 9.35cr Range Rover V8, Holley 390cfm, JWR Dual Port, 214 Cam, Lumention, Tubular Manifolds, S/S Single Pipe Exh, 3.08 Rear, 200lb Spax & PolyBushes all round, Anti- Dive, Strut-Top Roller Bearings, Capri Vented Discs & Calipers, Braided Hoses, 4 Speed Rear Cylinders, Uprated Master Cylinder & Servo, AT 5 Spokes and Cruise Lights, S/S Heater Pipes, Replacement Fuel Tank. No Door Stickers. Mine since July 1986, V8 from 1991