The rule supply & demand always applies for all the names - .cc includes.
There are not too many developed .cc sites so .cc names are considered 'sleeping beauty'.
Clone is a strong keyword with over 14,000 results from overture (w/o extension of course).
The domain name business is a funny business because there is one rule for pricing and appraisal "no rule" - There are some obvious exceptions (business.com, aa.com, etc,,,) but in general a name is a name is a name until you can find a buyer (retail buyer) - If you want to sell the name here or any other forums, you will not get much.
Clone.cc - name only $100 - $200 (whole sale) $500 + (retail)
This is just my personal opinion and not official appraisal as I am not a certified appraiser.
Just ignore all the appraisals from afternic - greatdomains, etc... They don't mean a thing until you sold it.
Good luck!
John