How much are the samples/loops ?
How much do the 'add-on' loops/samples cost ( which it often prompts me to do ) ? Do I get them all for one price, or can I be selective ?
GarageBand 10
Did you get GarageBand 10 for free or paid 4.99 $? If you had to pay for GarageBand, then tyou have the version with the free in-app purchase . The previous GarageBand 10 version was free, but the in-app purchase was 4.99 $.
It is a one-time purchase, so you cannot be selective:
See: Expanding GarageBand for Mac (v10.0) content with an in-app purchase