Depends on how much MOT and TAX they have, as well as condition.. really good photos showing lots of detail of the common faulty areas will help:
both door bottoms for rust
both doors and sides for car park "dings"
seats for wear and sag
carpets for wear and holes under the clutch foot heel
wheels for good finish and no rust
instruments to show aligment of milometer digits
Additionally:
service history and old MOTs to back-up claimed mileage.
Then, Watch Ebay for a while, to see what things are going for:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2440882938&category=9843#ShippingPayment
for instance, with decent tyres, and the dent removed may have gone higher..
The two you have may be of interest because:
Tachini is a limited edition, and has no engine management to worry about. (but has missed the body galvanising (but they didn't do the doors
) from 1991??)
The CLX must be one of the last imported officially into the UK, and will have a brake servo, and is the right side of the line for galvanising too
.. but has the engine management and catalyser to worry about
But really it's down to how badly somebody wants them, and how well you sell them...
Regards
John H