Gary,
You do not say if your car is an HR or a DE, however for pricing, the values are similar.
There are 3 x bearings in the end casing and I am unsure which one you require.
There are also numerous bushings and an oil seal that you may require.
The bearings are priced at £50.94, £26.08, and £26.08 respectively and all are showing in stock.
A complete new rear casing is £700.05 and is a 4-6 week order from japan.
However, I have a very low mileage preowned (23,000 miles) rear casing in stock complete with good bearings, bushings and seals.
This is the way that I would go as the bearings are very tricky to remove and install even with specialist tools.
I can let you have this for £100.00.
If you wish to proceed with your order then just drop me a PM..
Alex.