How much does it cost to send a postcard from England to Australia?

you will have to go to a post office to send it off via airmail. i think if you put them in an envelope it will be anywhere between �2- �5 which is approx $7 i think! (dont hold me to the exact conversion figure!!) but you wont need to buy any stamps individually as the person at the post office will sort it out!! enjoy ur holiday!