Antenatal classes/education
We did the hospital classes and private classes with my Physio which focused on drug free, kinda calm birthing techniques. Both were well worth it first time round. I can't remember how much either of our classes were but I think the hossi ones may have been around $70 and that was for 8 hours (2 hour classes over 4 weeks) and included snacks and drinks each week. It was a private hospital. I would have paid more, the classes were excellent IMO.
Our hospital classes focused more on the medical side of things plus hospital procedures, pain relief during labour, life with a newborn (the first week - what to expect), etc. The Physio classes were all about labour and techniques to assist labour and avoid intervention and drug free pain relief. We also learnt about how Physio can help post birth too.
I'd highly recommend doing both (or something similar) especially if your 'type' of labour is important to you ie you want drug free, low intervention, etc.