I need some airtight mason jars but I don't feel like buying offline.. if anybody has any store suggestions let me know?

Not sure where you live? Local grocrey store around here.

First, please take a little more care in choosing a forum. I moved your post from the Feedback forum which is for disussing this site.

Here's a couple of options:
Homecanning.com
Canning Mason Jars. Ball Mason Canning Jars at CanningPantry.com
Freshpreserving.com -|- Your complete source for all fresh preserving needs.

If you are looking for local stores try Agway

Mason jars are sold at my local grocery stores and in the canning season, I did see them at Wal-Mart.

Even the local hardware store has them:

Ace

Meijers, Krogers and Walmart. I am in Ohio.

In SC here... grocery store has them. Usually on the bottom shelf over where light bulbs and stuff are