I will be very happy to combine purchases to save you postage using 500gm and 3kg sachets. I will endevour to reduce postage if possible where destination postcode and item weight allow.I will invoice you within 24hrs of purchase. If you think I may have incorrectly quoted a postage cost, you may be right! I have done this a few times, sometimes not to my advantage. If you think I may be in error, please ask and I will confirm.