It won't be the Pre-Clinton 200-metre SA; it will be more like the existing Navstar accuracy.
The plan is to charge for a "guaranteed availability" (gosh how will they ensure that, by putting up a website with a statement from J Chirac with a sample of his sperm attached for DNA identification?) signal which you will have to pay for, and which will have a bit more accuracy too, AIUI.
The way to get real accuracy from GPS (below 1m) is to decode the signal which contains the atmospheric dispersion data. The US military encrypt that just for themselves. Galileo appears to plan to provide that to civilian users who pay for it; this appears to be really upsetting the Americans who have put out that famous (if completely unnecessary and obvious) statement that they reserve the right to put Galileo out of action if necessary.