I understand Paul,my friend just along the road from you in Newport News has had similar problems getting parts for his Austin Mini.
Thankfully we have an agreement,he sends me Stovebolt stuff and I in return send him his Mini bits.
I watched a USA based programme the other night and the guy was saying a pair of plain old S.U. carbs for his MG TF were $1200!

Austin 1100s? Obviously our American friends had more sense.....

P.S. If you ever need help in obtaining Jag parts for the pick-up,give me a shout,i'd be glad to help.