The Decktet is available in a free print&play version, but there are also pretty sets available to buy.
A single deck: With the lattice card back. $10
A single deck: With the firmament card back. $10
A double deck: Both with the firmament card back. One of the two sets has a decorative squiggle in the upper right corner of each card, to make it easy to separate the two decks. $19
These decks are printed by the same shop that made the orange box decks that I used to sell. The colour and print quality is very nice. I highly recommend them. (Unfortunately, shipping outside the USA is exorbitant.)
Decktet suit chips are also available. There are several different configurations.
The basic set: Sixty chips, ten of each. The 32mm wood-filled plastic chips come in six colours. The stickers come on a sheet, and you apply them yourself. Not a complete game; you need to supply your own Decktet. $10
The jumbo set: 126 chips, 21 of each. Otherwise as above. $19
The jumbo deluxe set: Start with a jumbo set, add a deck and some dice. $28