As stamps collector https://bt.irlbtc.com/view/1915529.msg19001071#msg19001071 and bitcoin/blockchain passionate, I have just placed my order.
Despite I am not a collector of new editions (or Austrian stamps), I think this is a kind of object that deserve to be collected!
Thanks for share!

Are stamps like this going to be more valuable because they are the first of it's kind? Since I am not living in Australia they would not be used for much else.

"According to the press release, the so-dubbed “crypto stamp” is the first stamp in the world to be authenticated via blockchain technology. The postal service has reportedly issued 150,000 copies sold at € 6.90 apiece."

So these crypto stamps got to be purchased via fiat?
These seem to be collectible items rather then something people would actually use on a daily basis because of their cost. Maybe if they could of marketed for its use on the blockchain then the way they did people would be more interested in it as a technological advancement rather than a fad item.

This kind of adoption no matter how big or small it is would bring a huge impact on the development and improvement of cryptocurrency. It will still spread awareness for those people who aren't well-informed about crypto and Bitcoin. We must appreciate every little adaption because we'll never know how it would affect the market.

Does it mean that it's possible to get it delivered next to our doors? It's interesting that everyone would get the chance to have some of it. It's a great thing that there are crypto related goods which we could purchase anytime. People will surely support this one.

Stamps are very beautiful, but now in the 21st century, the age of the Internet, few people now use traditional mail in envelopes. But still an interesting idea.

Ah, Thank you OP. I am a collector of coins and stamps and everything that has something to do with Crypto currencies, so this is a perfect fit for me. I like the QR code idea and I would like to get hold of this as soon as possible. <Already doing some more research and phoning around for this>

It is a pity that email basically replaced letters and stamps these days, because there is just something about receiving a physical letter with a pretty stamp on the envelope that cannot be substituted by electronic documents.    < I must say, the stamp is pretty expensive. >

Yes, they are a national postal service and there is an agreement between countries (UPU or something like that) about transit of postage between countries. There is not any expense to pay!
Please note that each stamp will be loaded also with ETH, so it's a kind of crypto-collectibles that we have ever seen!
I am still curious to read more about generation of private key...

What's up with you guys?
It's a collection stamp, a novelty and it's created in a country where the average wage is 1900 euros a month.
What did you expect? 50 cents?

There are plenty of stamps sets in the link I gave above which go over 20 euros for 4 or 5 stamps.
I really like the idea but ...ETH only...that is a big NO for me.