Set 1: https://auspost.com.au/shop/product/pokemon-stamp-pack-1515540 Sold Out
Set 2: https://auspost.com.au/shop/product/pokemon-2-stamp-pack-151…
Pokemon stamps are highly collectible unlike many other stamp editions. These stamps are $39.5 shipped sold on eBay right now and version 1 is sold out instore everywhere and highly valuable and sought after.
https://www.ebay.com.au/itm/2021-Pokemon-Post-Office-Pack-wi…
Even if you don't collect them, your friends and family will get cool Pokemon stamps when you send them letters. My local Balgowlah Heights Post office had 6 sets left but they are freely available online.
Gotta catch 'em all!