to get the worm heaven worm farm run at full swing you will need approximately 4000 worms + which would cost you considerably more than the initial R1100 for your order and the starter population of 500 worms. Not only the additional worms would add to your costs but the cost for packaging and postage would increase as well.
However you are more than welcome to order additional worms if you would like so. The worms are prolific breeders and can under ideal circumstances double their population every 2 to 3 months. So with a little patience you will get your worm farm system running at capacity without extra costs and your worm herd will recycle large quantities of food waste and other organic household waste like kitchen scraps, newspapers and even Cat poop and dog poop.
So it's up to you if you would like an additional batch of 500 worms the total cost for your order including postage would be R1375. Every additional 500 worms including packaging and transport will cost R 275 extra.