Fully restored 2 doors are currently worth between £5k and £15K - fully restored meaning as per new condition (plenty of sheds still kicking around).
Parts are sating to get more difficult especially for early ones with visual seats and bonnets mounted wing mirrors. 2 door new doors come up for time to time but can cost as much as the car itself.....they are well and truly starting to get into proper classic car prices now. Last week I saw a mint 4 door Overfinch Classic - only built n very limited numbers - dealer wanted £27995.....
Six years ago I sold what I though was a rough 2 door (but not as rough as many I've seen on ebay) - definitely regretting it now.....