Talk:Aerial photography funding appeals
Other source : SPOT image
You might add this as possible additional source:
(available in english)
They have a service for GeoTiff images online ordering:
in about 30 countries.
Resolution is 2.5 m. Price is 2.0€ per sq.km (see the price in the list below. The service is called "SPOTMaps"). Minimum billing is 20€ till 1000 km2 (for the online service, otherwise you have to contact them). Location accuracy is 10 to 15 m RMS, depending on country.