Crikey! They're a bit on the pricy side, thats like 10EUR, or 100USD
Miniaviation used to have some of the best micro batteries kicking around, but unfortunately they discontinued their 130/160mah range. They were also a UK based company.
If you ever need more I'd suggest the Hobbyking nano-techs. They may not last as long as the competition but at only 1.30USD (which works out to what? 5p
) a pop you cant complain