CCiDeal was easy to install.
Ease of use
Getting the data from ING to matchup caused some issues, but these were mostly small details I overlooked, or conflicts with Falang.
David helped get it running in the first place, with prompt initial support. As sometimes I couldn't figure out with the ING or CCiDeal docs
Later on when CCiDeal was working it turned out that the return to our website was blocked by SEF conflicts between Falang, Joomla and CC.
Value for money
Extremly well worth it period.