Plenty of spares available for Magnettes, if you shop between the two companies NTG and MG Spec for the best deals. NTG has all the leather so can charge what they like but at least its hand made to your spec- in my case maroon leather with maroon carpet.
Problem is getting complete cars for less than £10,000 these days, I spoke to John Shorten who has restored over 45 ZA and ZBs and he heard of one recently selling for £31,000!!!
This car wont be for selling but its eating away at the budget quicker than I expected.