The best way to gauge this would be to look at some of the items which are exclusive to these currencies and see what they're selling for. Head to the main trade locations on your server and check the guild stores for those items (sorting by cheapest).
The motif pages sold for AP or the armour/polymorphs sold for TV.
@Turelus - EU PC Megaserver "Don't count on others for help. In the end each of us is in this alone. The survivors are those who know how to look out for themselves."