Baseball Card Collecting  

I used to collect baseball cards myself when I was growing up but kind of grown out of it. i used to get the single baseball packs at local walmart. I also have a bunch of boxes that have never been opened. The box sets like mine are hard to find. Ebay would be your best bet to find older basball cards in box sets like that.

In my opinion, quite a few of the sellers of unopened packs/boxes of cards aren't really unopened. There is an awful lot of pack re-sealing going on and the problem is, many of these re-sealers are getting pretty good at it.
If you don't know what you are looking at, you could be buying searched packs and find yourself with a bunch of common cards with dinged corners or centering problems.
There are many reputable dealers in sealed packs/boxes and if you're interested in buying unopened cards that you can be almost 100% sure they are original search for- Base Ball Card Exchange.
I've have purchased from this dealer of unopened merchandise in the past and I know I can buy with confidence from him. The owner is an authenticator for the #1 grading company in sports cards and certainly would risk damaging his rep by selling anything he thought could possibly be re-sealed.

Feel free to ask if you have questions and Good Luck ripping packs!!

A lot of these people buy from wholesalers. They either have a store where they sell baseball cards and use the Internet as a way to sell other cards, or they have an online store where they sell cards.

eBay is a great resource for these people to sell their cards because baseball card collecting isn't what it used to be.