I actually have ordered the cards off a website. toywiz.com is the site I have used. You can actually get the cards at Wal-Mart. If you can, pick-up the booster sets they sell. It's about $15 for one. If they only have the individual packs for sale, feel the pack to see if some are thicker than others, there is a good reason to why those are.
I said hey, he said hey, I told him I was a fan. It was really late so what I really wanted to say was, "what the hell are you doing out so late?! Go back home and rest so you will be back for the playoffs" LOL.