Hey, home births are definitely an option so long as the pregnancy is low risk which they will only be able to tell later on in the pregnancy as further complications can still occur right up to your due date.
Since you are from SA I belong to a wonderful site which you should visit
www.earthbabies.co.za which is all south african ladies. Most of them have done home births and some have even done unassisted (NO help) which like mentioned is really not a good idea and is even actually not really allowed in this country (SA)!
A home birth consists of a pair of midwives who aid you through the birth and they always have a gynae on call in case anything goes wrong.
The average cost for a homebirth is R3900 including 3 postnatal home visits by the midwife. The cost for a hospital birth can average out at R20 000 (Obviously a natural uncomplicated no pain relief birth being cheaper & a caesarian birth being more expensive)(Just sleeping in their bed and eating their food costs up to R7000 for a 2 night stay!!!)
So it really is advisable to try and afford at least some kind of medical scheme. Cos even with the homebirth, if there are complications during the birth you will still need to be rushed to hospital.
There is also the option of a state hospital but believe me, I've watched quite a few births at state hospitals and its really not pretty

Plus youre only allowed 4 hours recovery time
My advice would be to look for one of those cheaper schemes or even just get a hospital plan medical aid which pay any hospital stays but not general medical things like GP visits. The premium for these are much lower.
Let me know if you need any more info