Once the mat arrives(could be awhile, sadly. Comes from Hong Kong, I believe.) I will get you some pictures. But anyhow, I used artscow.com to print the cards. They have a couple viable options. It just depends on how authentic you want to go.
I think you can get a mini(1.5" x 2.5") deck for $8 and shipping. They are just about an inch smaller than normal poker cards. So, not bad. But the site has promo codes all the time. Right now, they offer 35% off your order.
As far as multiple decks, I only ordered one set. It takes two decks to make one Pazaak deck. 40, alone, make up the main deck. So, that pretty much shoots one deck of 52. Then, 12 blue, red and blue/red. once you add the yellow advanced cards, it adds up quick. I also ordered "blanks" in each color to write on with a marker, in case of a lost card or if one wanted to create a new card.
To get around needing multiple decks, my plan is this(tested with a regular deck of cards and using a marker to make them Pazaak friendly)....
Main deck remains unchanged.
Take the 40ish side deck card and just shuffle them together. Then, deal them out amongst the two players. It is fair and it isn't like I had to travel the galaxy and pay $275 for a 1+/-2 card from a dealer.
So, it is more like a real card game you would buy in the store. Also, I believe you could probably play 4 players with ease, if you wanted to.