depends on the sort of size you are sending, but if you go through google for couriers you should find quite a few companies who are cheaper for the bigger stuff
The post office is the cheapest but your parcel may never get to its destination and if it does it'll probably be broken in lot's of little bits, interlink or tnt is best.
The post office is the cheapest but your parcel may never get to its destination and if it does it'll probably be broken in lot's of little bits, interlink or tnt is best.