These 6 are alllayered with 24 CARAT GOLD. There are a few reasons why these are so rare. Secondly, there are lots of collections available which have the first 6 coins but as the final coin was FULLYLAYERED 24 CARAT GOLD, lots of people didn't complete the collection. You simply won't find these in better condition indeed if you find them at all. Fourthly, this comes with all 7Certificates of Authenticity (COAs) again in MINT CONDITION.Yes you may find cheaper but definitely not in better condition! These are simply stunning and is definitely an investment item.
Happy to listen to sensible offers. Be quick and good luck!