I bought mine at walmart. Mine came in a tin as well. I think I paid just under $4.00 for a box of 28 which comes out to about 14 cents apiece. I didn't think was too bad. They sell them in larger tins, the ones I bought were for the game Double Six, but they also had Double nines etc.
I looked at several places and only found them in tins, and this was about the best prices. Other places I looked included, Target, Big Lots etc.
Hope this helps.